Kolb didn't even make it into the regular season in 2013. An August concussion landed him on injured reserve amid whispers that he was contemplating retirement. After suffering a string of head injuries, Kolb's once promising future is entirely up in the air and we don't expect the Bills to absorb his weighty $1 million roster bonus due next month.
If anyone will challenge the second-year passer, it's Lewis, who showed a dash of promise in five starts. Manuel struggled mightily in his rookie season -- even in a reduced and simplified scheme -- but the team is committed to giving him every chance to succeed in Year 2.
We'd be surprised if Kolb is along for the ride.