Yeah ok...ahem, ignorance of all things related to American football aside....
Many have clamored for a player to replace "aging" Lee Carsley at some point down the road. Bradley could be that player. Solid in the tackle and skillful with the ball at his feet. Oh, and he scores a bit too, check out what he's done for Heerenveen in Holland.
In addition, he's young so he's still got upside potential and I don't think he'd take too long to adapt to the pace of play in England. Someone's gonna get him, I'd just as soon it be us.
As for Clint Dempsey, I like him and think he's a good player but I don't know where he'd fit in with us. They (and the USA) are using him up front but we're covered in that dept. I personally think he's better in midfield. Could he help us there? I think so but I think he'd be a good, solid squad player and I don't think he'd replace any of our current starters maybe except Osman.