Well considering much of his cap impact is from past bonuses that we paid him and another team wouldn't have to take those one, he'd be a FA for about an hour and a half.
If we were to trade him, another team would only pay him $6M next season, $12M in 2018, and $18.5M in 2019... all great bargains. So yeah, needless to say, there would be about a half dozen teams that would spring into action at that point. At those amounts, his production doesn't even matter.
The reason we are "stuck with him" is because it would take many, many years to find a better player, and we have no interest in getting rid of a player who's already proven he can be very good for us. Doesn't make much sense from a business or an on-field success standpoint.
We know he's better than Osweiler, and he got $18M a year. So yeah, the bidding starts at $20M and goes up from there.