Hard to see a team taking him on to be the backup, as has been said before there's too much nonsense that goes with him to be worth it.
It'll be insane if this is the end of him though, when you think about it. Second year QB, a first round draft pick no less, takes over a 1-4 football team and leads them to the playoffs, winning a postseason game to cap it all off. He's then traded for nothing and is never given another shot in the league.
Anything like that ever happened before?