Bill Walker will continue to play some really good basketball.
And Leon Powe will come back strong. He is, and always has been, a much better player than Big Baby.
As for some other ex-Celtics:
-Gabe Pruitt has always been bad. I used to crack up when I would see people complaining about Pruitt not getting enough PT. I believe he's in the D-League now, but expect him to be out of the league completely in a year or so.
-Eddie House, while I loved him, will probably continue to decline and retire within 2 years.
-Patrick O'Bryant, like Pruit, has always been awful. I'd make a prediction about him but I'm not sure he's still in the league. Again, hilarious how people used to say this guy should get more PT.