mmm... where are the picks?
If you are trading Green and Bass you don't settle for a big expiring. Celtics have that in Hump+Bogans (combined 17M).
I'd rather stay put. Let Hump expire or send him to Philly for cap space+assets, trade the Bogans unguaranteed contract on July 10th and then use the Pierce TPE.
Green and Bass are good players on reasonable contracts. Wallace, on the other hand...