Who is 'Danny's guy'?

Tis the season for speculation. And while most of the speculation has focused on who 'Danny's guy' is in the draft (Rubio, Thabeet, Evans), if he indeed does trade up, I'm going to go a different route. Maybe the player Ainge covets isn't even in the draft. Maybe he's a player already in the league. A top-5 player, in fact. A player who is going to be part of that stellar crop of free agents in 2010. Up until recently, I wouldn't have given it much thought, seeing as it appeared that he'd be staying put. But, with money issues and impending free agency looming, I really think that this player can be had. And it wouldn't shock me if this is the player Ainge is going after. Would there be any objections to seeing this headline on the sports ticker?: The Boston Celtics trade Ray Allen and Rajon Rondo to....................