He'll do what he did with the Pats: Leave a team that's struggling, to go to a team that just needs a QB.
He won't go to Las Vegas as that team is ***, and no amount of friendship with McDaniels will matter. Tampa lost a lot of it's top talent after last year and they won't be getting better, so that's out.
It's going to be San Fran, as all they need is a QB. Miami I guess could be up there, but he doesn't want to have tough AFC East competition now that it's finally gotten better as a conference.
Make no mistake, Brady isn't going anywhere that's challenging or close to home/family.. he's going to try and find the easiest path to another ring. That's what he did with the Bucs.