I could see the Raptors, Celtics, and Grizzlies making this trade:
BOS sends: Green, Bass, future 2nd
BOS receives: Fields, Hayes, Pondexter, Adams, 2015 MEM 1st (Protected top 14---Opposite from DEN's protection)
MEM sends: Prince, Pondexter, Adams, 2015 1st rd pk
MEM receives: Green, Hansbrough, 2 future 2nds
TOR sends: Fields, Hayes, Hansbrough, conditional 2nd rd pk
TOR receives: Prince, Bass
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Why each team does it?
TOR: Toronto gives up Fields, Hayes, Hansbrough to get upgrades in Prince & Bass. They also clear a roster spot and give up a 2nd rd pick in the process.
MEM: Memphis gets its upgrade at the wing in Green (give up Adams to get him). They shed Pondexter's contract and Hansbrough (backup PF) to solidify their frontcourt.
BOS: Boston gets Jordan Adams. We take on Pondexter (3.1 mil over the next 3 yrs) which shouldn't be a problem since we're rebuilding. Fields and Hayes are immediately waived, while Adams is sent to the D-league until further moves are made to trim the roster.
Boston would get a 2nd rounder (via Tor) for trading Bass for Hayes. They send that 2nd rounder along with one of their own 2nds (maybe a heavily protected one) to get Memphis's 1st.