During his press conference on Monday, Jim Tomsula opened the door to a quarterback controversy.
And it looks like the 49ers are set to make a change.
A source confirmed to CSNBayArea.com's Matt Maiocco that Colin Kaepernick has been told he will be the back-up quarterback Sunday and Blaine Gabbert will start against the Falcons.
The news that Kaepernick would not be starting was first reported by the Bay Area Sports Guy.
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SANTA CLARA, CA - OCTOBER 22: Carlos Hyde #28 of the San Francisco 49ers rushes with the ball against the Seattle Seahawks during their NFL game at Levi's Stadium on October 22, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - OCTOBER 22: Kenneth Acker #20 of the San Francisco 49ers intercepts a pass by Russell Wilson #3 of the Seattle Seahawks in the third quarter of their NFL game at Levi's Stadium on October 22, 2015 in Santa Clara, California. (Photo by Thearon W. Henderson/Getty Images)
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SANTA CLARA, CA - OCTOBER 22: Kenneth Acker #20 of the San Francisco 49ers intercepts a pass by Russell Wilson #3 of the Seattle Seahawks in the third quarter of their NFL game at Levi's Stadium on October 22, 2015 in Santa Clara, California. (Photo by Thearon W. Henderson/Getty Images)
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SANTA CLARA, CA - OCTOBER 22: A general view of the NFL game between the San Francisco 49ers and the Seattle Seahawks at Levi's Stadium on October 22, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - OCTOBER 22: A general view of the NFL game between the San Francisco 49ers and the Seattle Seahawks at Levi's Stadium on October 22, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - OCTOBER 22: Colin Kaepernick #7 of the San Francisco 49ers looks to hand the ball off to Carlos Hyde #28 during their NFL game against the Seattle Seahawks at Levi's Stadium on October 22, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - OCTOBER 22: Colin Kaepernick #7 of the San Francisco 49ers attempts a pass against the Seattle Seahawks during their NFL game at Levi's Stadium on October 22, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Carlos Hyde #28 of the San Francisco 49ers runs with the ball before being tackled by Antwon Blake #41 of the Pittsburgh Steelers in the first quarter during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Jarryd Hayne #38 and Mike Davis #22 of the San Francisco 49ers walk off of the field following their 43-18 loss to the Pittsburgh Steelers during at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Jarryd Hayne #38 of the San Francisco 49ers returns to the sideline following a punt against the Pittsburgh Steelers during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Jarryd Hayne #38 of the San Francisco 49ers returns to the sideline following a punt against the Pittsburgh Steelers during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Jarryd Hayne #38 of the San Francisco 49ers runs with the ball in the first quarter against the Pittsburgh Steelers during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Carlos Hyde #28 of the San Francisco 49ers carries the ball while being tackled by Ryan Shazier #50 of the Pittsburgh Steelers in the second half during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Colin Kaepernick #7 of the San Francisco 49ers scrambles away from Stephon Tuitt #91 of the Pittsburgh Steelers in the second half during the game on September 20, 2015 at Heinz Field in Pittsburgh, Pennsylvania. (Photo by Justin K. Aller/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Bud Dupree #48 of the Pittsburgh Steelers sacks Colin Kaepernick #7 of the San Francisco 49ers in the second half during the game on September 20, 2015 at Heinz Field in Pittsburgh, Pennsylvania. (Photo by Justin K. Aller/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Antonio Brown #84 of the Pittsburgh Steelers catches a 56 yard pass in the fourth quarter against Tramaine Brock #26 of the San Francisco 49ers during the game on September 20, 2015 at Heinz Field in Pittsburgh, Pennsylvania. (Photo by Justin K. Aller/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Lawrence Timmons #94 of the Pittsburgh Steelers reacts following an incomplete pass ruling in front of Colin Kaepernick #7 and Garrett Celek #88 of the San Francisco 49ers in the third quarter during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Vernon Davis #85 of the San Francisco 49ers catches a pass in the third quarter against the Pittsburgh Steelers during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Colin Kaepernick #7 of the San Francisco 49ers high fives fans while leaving the stadium following their 43-18 loss to the Pittsburgh Steelers at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Anquan Boldin #81 of the San Francisco 49ers reacts following an incomplete pass in the third quarter against the Pittsburgh Steelers during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Colin Kaepernick #7 of the San Francisco 49ers drops back to pass in the second quarter against the Pittsburgh Steelers during the game at Heinz Field on September 20, 2015 in Pittsburgh, Pennsylvania. (Photo by Jared Wickerham/Getty Images)
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PITTSBURGH, PA - SEPTEMBER 20: Anquan Boldin #81 of the San Francisco 49ers has the ball stripped by William Gay #22 of the Pittsburgh Steelers is overturned and ruled as an incomplete pass during the first quarter on September 20, 2015 at Heinz Field in Pittsburgh, Pennsylvania. (Photo by Justin K. Aller/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Garrett Celek #88 of the San Francisco 49ers is hit after a catch in the first half of their NFL game against the Minnesota Vikings at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Carlos Hyde #28 of the San Francisco 49ers runs for a touchdown against the Minnesota Vikings in the second quarter of their NFL game at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Thearon W. Henderson/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Carlos Hyde #28 of the San Francisco 49ers dives for a touchdown against the Minnesota Vikings in the second quarter of their NFL game at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Thearon W. Henderson/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Carlos Hyde #28 of the San Francisco 49ers celebrates with Colin Kaepernick #7 after scoring in the second quarter of their NFL game against the Minnesota Vikings at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Thearon W. Henderson/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Colin Kaepernick #7 of the San Francisco 49ers runs with the ball against the Minnesota Vikings during their NFL game at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Carlos Hyde #28 of the San Francisco 49ers rushes past Anthony Barr #55 of the Minnesota Vikings during their NFL game at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Carlos Hyde #28 of the San Francisco 49ers rushes with the ball against the Minnesota Vikings during their NFL game at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Jarryd Hayne #38 of the San Francisco 49ers warms up prior to playing the Minnesota Vikings during their NFL game at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - SEPTEMBER 14: Reggie Bush #23 of the San Francisco 49ers warms up before their game against the Minnesota Vikings during their NFL game at Levi's Stadium on September 14, 2015 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Nose tackle Mike Purcell #64 of the San Francisco 49ers returns an interception for a 47-yard touchdown against the Dallas Cowboys in the second quarter during a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. The 49ers won 23-6.(Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Defensive tackle Quinton Dial #92 of the San Francisco 49ers celebrates after sacking quarterback Brandon Weeden #3 of the Dallas Cowboys in the second quarter during a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. (Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Jarryd Hayne #38 of the San Francisco 49ers returns a punt against the Dallas Cowboys in the first quarter of a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. (Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Quinton Patten #11 of the San Francisco 49ers celebrates after blocking a punt for a touchdown against the Dallas Cowboys in the fourth quarter of a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. (Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Head coach Jim Tomsula of the San Francisco 49ers watches his team right after giving up a touchdown to the Dallas Cowboys late in the fourth quarter of a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. The 49ers won 23-6. (Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Quarterback Colin Kaepernick #7 of the San Francisco 49ers takes a snap against the Dallas Cowboys in the first quarter of a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. The 49ers won 23-6. (Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Quarterback Colin Kaepernick #7 of the San Francisco 49ers hands the ball off to running back Carlos Hyde #28 against the Dallas Cowboys in the first quarter of a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. The 49ers won 23-6. (Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Nose tackle Mike Purcell #64 of the San Francisco 49ers returns an interception for a 47-yard touchdown despite a diving attempt to stop him by guard Mackenzy Bernadeau #73 of the Dallas Cowboys in the second quarter during a preseason game on August 23, 2015 at Levi's Stadium in Santa Clara, California. The 49ers won 23-6.(Photo by Brian Bahr/Getty Images)
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SANTA CLARA, CA - AUGUST 23: Running back Jarryd Hayne #38 of the San Francisco 49ers picks up a step during pregame drills before a preseason game against the Dallas Cowboys on August 23, 2015 at Levi's Stadium in Santa Clara, California. (Photo by Brian Bahr/Getty Images)
