Veteran defensive lineman Justin Smith has decided to retire after 14 NFL seasons, the final seven of which came after he signed as a free agent with the 49ers in 2007.
South Carolina's Thompson led SEC in passing yards during 2014 season
Pair of drafted tight ends, Blake Bell and Rory Anderson, will create interesting competition in training camp
Kilgore and Marcus Martin are expected to compete for starting job at center this summer
The quality of this year's picks, however, is still to be determined
Davis is used to a pro-style offense from his three seasons at South Carolina