What team is going to trade the Celtics something of value for Pierce? Who is a Paul Pierce away from being a contender, THIS year?
Only one I can think of is the Clippers (who are already a contender).
Butler + Odom + Bledsoe
for
Pierce + Wilcox + Barbosa
That could make sense if the Celtics then trade Rondo for something. Bledsoe has been phenomenal in limited minutes for the Clips and pairing him with Bradley could give the Celtics a ferocious, very fast and athletic combo in the backcourt on both ends of the floor.
The Clippers would obviously prefer not to give up Bledsoe, who has been GREAT this year, but going from Butler to Pierce is a pretty huge upgrade, and could make them nearly unstoppable this season.