1. Michael Vick.
Vick turned in a Pro Bowl season that earned him NFL Comeback Player of the Year honors last season–despite not taking a single snap with the first team offense during all of training camp and preseason.
Imagine how Vick could do if he enters the season with the confidence of being the team’s full-time starter. He won’t have to worry about losing his job to Kevin Kolb if he plays poorly because Kolb won’t be around. He can lead the team for all 16 games, hopefully with no injuries.