A three way might work
http://games.espn.go.com/nba/tradeMachine?tradeId=7c9pfd3
With the Bucks giving up a 1st rounder (likely to Boston)
(you can replace Gooden with Udrih as well for a shorter contract)
I don't think they will be giving up Gallo. He is their future, and has been great so far this season.
Probably.
But he is the only player they have I would move Pierce for at this point.