Yup hard to say how someone like Bryant would work out in a place that is more controlled, like NE. Maybe he spouts off in Dallas because they let him. Sometimes, just like a kid, things change with a more disciplined atmosphere.
It would be a small gamble, but with the right contract he'd be worth it to a team like the Pats. Plus, unlike Wayne, Dez isn't going to retire. He's only 29 and looking for one more contract. It very well could be he keeps it under control for one year and then goes back to misbehaving after someone gives him a bunch of guaranteed money.