Not sure I even like to entertain the idea of signing a player from a playoff opponent while still in the midst of it. That said, I can understand the interest in Haslem.
But no chance. First off, Celtics already have their change of pace PF under contract for next season. Second, our team isn't likely to have anything more than the mid-level to spend. And as has been pointed out, it would take significantly more to pry loose U.D., a Heat team captain for the past three seasons.
The first time Haslem was a free agent he left at least $10 million on the bargaining table, turning down a more lucrative offer from the Cavaliers - out of loyalty to the franchise that gave him his start.
Doesn't help either that he's a Miami native and former Gator.
EDIT - Or to put it another way, it's more likely we'll see Haslem back in black next season than second pick Michael Beasley. Maybe if Wade bolts to Chicago? (Long shot.)