It's tough to say, since I like the way he plays (when he plays) but the Celtics simply need to upgrade Bradley's position at the 2 guard. Assuming Rondo is the starting point guard, he's out.
Jarrett Jack at $6.3M/per now looks like stupidity. With the cap the way it is, the Celtics cannot afford to go all "late 90s" with stupid contracts. Unfortunately for Bradley, there are a lot of young players who can spell either guard spot off the bench.
Look at how good Reggie Jackson was with Westbrook out - he's a bench guard now.
If AB gets $4M/per, he should be doing a happy little dance. While he would be a great option as the first guard off the bench, he is not starting caliber, and is the wrong choice for a 2 guard to play with Rajon Rondo.
If he wants $7M, cue Boyz 2 Men:
http://www.youtube.com/watch?v=8b3mftcV0dY#aid=P-OnxYO1mG4