And at that time I expect he'll either be moving on or already moved on to some other team because he's a little light in the cajones dept.
When he was traded to Detroit some were acting like he was a bag of trash, which was unfair to him. He is not a bad QB. But he's also not gonna be the guy to pilot Detroit to the top because when he faces the first top defense he's going to crap his pants in the pocket. So the truth IMO is that he's a very good bridge QB, someone you can win with, but you're risking a lot (i.e. you're risking the squandering of good rosters) trying to contend with him in place.