This is a super strong draft class. The Celtics are clearly rebuilding, so they should be making decisions based on what would give them the best opportunity to get draft picks.
I'd propose the following:
http://games.espn.go.com/nba/tradeMachine?tradeId=6pczd3l To Boston:
Ronnie Brewer
Rashard Lewis and Jan Vesley
AND - Washington Wizard's First Round Draft Choice.
To Chicago:
Ray Allen
AND Boston's SECOND ROUND draft choice
To Washington:
Kevin Garnett (expiring)
Taj Gibson
CJ Watson
AND Chicago's FIRST ROUND draft choice.
Why?
(1) Celtics: it gives us two picks, one probably very high, in a stacked draft. We lose Garnett's expiring (to say nothing of Garnett and Ray) but there aren't too many free agents this year, and free agents hate Boston for whatever reason. It makes us much more athletic, and basically gives the keys to Rondo - who has earned them. We become a running team, get younger, and start rebuilding around Rondo, and either Anthony Davis, Andre Drummond, Jared Sullinger, or Harrison Barnes. This is a STACKED draft.
(2) Chicago: They're now a contender that can beat Miami.
Wade or Lebron has to chase Ray through screens on D the whole game. He's an above average defender for his position, and can take some of the scoring pressure off of Rose in the big moments. He opens up the floor for Boozer and Noah. ...am I really trying to sell Ray Allen? He's the best player in the trade. You know HALL OF FAMER RAY ALLEN?
(3) Washington: they dump Rashard Lewis a year early, in exchange for some veteran leadership they sorely, sorely need. Javale McGee? Andre Blatche? John Wall? This is a team of immature nobodies who needs a Garnett like pressence to step in and help them. They also get a nice young player in Taj Gibson, who can play that small forward/rebounding forward role. CJ Watson gives John Wall a legitimate back-up point-guard. It makes them tougher, and better defenders.