I think Raja Bell, even at 33 yrs old, would be a terrific fit to the Celts team. He's a great defender and can hit the 3 when needed. He'd be a definite upgrade to TA.
Although, this may be more of a pipe dream because rumor has it he's looking for more than the vet's minimum, and he's being recruited by Kobe and the Lakers, as well as Miami.
Maybe our Big 3 can use some of their magic veteran persuasion tactics to convince him that Boston is the place to be... I hope...