The 6-foot-6, 240-pounder should provide stability despite starting just one game in the past five seasons. Quinn, 29, will play the tutor for Grossman.
"I think I can really help the other quarterbacks learn the offense," Quinn said. "I know it, and quarterbacks learn sometimes differently than how it's presented to them, and I can relate maybe more on his terms and I'll be able to help any way that he needs."
Quinn should be prepared to step in for Grossman if necessary. Chris Chandler is still second on the depth chart at quarterback, but that could change through several spring mini-camps and training camp. In fact, there is a chance that Chandler might not even be a part of the team when they head to Bourbonnais.
Quinn is still somewhat of an unknown quantity because of his limited playing time in his six years. He is a pocket passer with adequate but not exceptional arm strength. He throws a catchable ball and has shown good mechanics and accuracy when he has time. But he struggles to beat the blitz or when he is hurried because he is not very mobile in the pocket.
The Insiders contributed to this report.