This is what I would try to do with the roster. It's high risk, high reward.
Trade 1
BOS/LAC/SAC
Boston receives: DeMarcus Cousins, Caron Butler, and Chuck Hayes (salary dump for SAC)
LAC receives: Kevin Garnett
SAC receives: Eric Bledsoe, Jared Sullinger, BOS 2013 1st round pick (16), and BOS 2014 2nd round pick
Trade 2
BOS/NO
Boston receives: Eric Gordon
NO receives: Paul Pierce and Avery Bradley
Roster:
Rondo/Jet
Gordon/Lee/Crawford
Green/Butler
Bass/Hayes
Cousins/Melo/vet min
That's an expensive ballclub. But you also have players with all-star potential at 4 of 5 starting spots, none of whom is over 27. I'm probably overvaluing our assets. But dreaming is what the offseason is for, right?