I can't see giving Bradley or Stephenson that sort of money on this team. As such, I would try to trade Bradley during the season for someone I think makes more sense long term.
Maybe something like this:
Waiters, Bennett, Bynum, Jack
for
Green, Lee, Bass, Bradley, Bogans
Boston upgrades (imo) at SG with Waiters, gets a real PG in Jack (to start now and be the third guard when Rondo is back), and takes flyers on Bynum and Bennett. Losing Green is tough, but given the rest of the trade I think it would be worth it.