At this point, I think the only way this can be salvaged is if a 3rd team gets involved.
As reports state, the Clippers are also very interested in Aaron Afflalo from Orlando and Danny Granger from Indy.
So, the Celtics could conceivably try for one of these two trades (both 3 team deals.)
1.)Boston/Clippers/Orlando
http://espn.go.com/nba/tradeMachine?tradeId=lon2qt3Celts get - Jameer Nelson, Deandre Jordan, Caron Butler, Orlando's 2013 1st round pick (Ben McLemore), Clippers future 1st and 11 million trade exception from Orlando
Orlando gets - Rondo and Bledsoe
Clippers get - KG and Afflalo
2.)Boston/Clippers/Pacers
http://espn.go.com/nba/tradeMachine?tradeId=lxvja3cCelts get - Bledsoe, Butler, Jordan, future 1st from Clippers and Indiana's 2013 1st round draft pick.
Clippers get - KG, Danny Granger and Lance Stephenson
Pacers get - Rondo and Avery Bradley.