Interesting theory explained on The CMSB. Here's one of the 4 reasons:
If he signs with San Antonio, it looks alright. If he signs with the
other two for more money (or slightly more money), it looks like a
money grab. If crazy Ron didn't go for the bigger pile of cash, why
would 'Sheed? Also, he has played with Vince Carter before in college, do you really think he wants to do that again?
Also interesting is the open letter to Danny Ainge on LOSCY regarding Leon Powe
What is so risky about this? If you were willing to keep on Sam
Cassell and Patrick O’Bryant at the start of the season, why not keep
Leon? Get rid of Gabe Pruitt and give his roster spot to Leon.
There is nothing that risky about this at all. For $800,000 you take
a chance on a guy that helped you win the franchise’s 17th championship
and would resign for the future TO BE your bench. He wants to be in
Boston and Boston wants him here.
And you know, Danny, you know that Leon would have taken your 1-year contract at the league minimum.
He speaks for a large segment of Celtics fans. Leon was certainly loved here. I hope he knows that. Maybe they'll find a way to bring him back