This whole discussion is silly No defender in the league "locks up" Ray Allen, because of his work off screens. We don't need to pretend AB is light years ahead of other elite wing defenders that Ray has managed well enough with.
I don't see why Ray would go to Miami, and I'm guessing this is a negotiating tactic with the C's
If he wants to start/play big minutes, he'll go tithe Clips. If he wants $, he'll stay in Boston. If he was willing to sit on the bench for half his market value just to get a ring, he would have done that for his first ring. That's a move for players like Karl Malone just trying to hang on for the ride, not champs who could still start in the league.
Classic LBJ/Wade though. "Man, I hate the Celtics. Lets try to get them to join our team!"