I'll admit to the possibility of a sick lop-sided deal that could change my mind, 
but if I were king I would not trading Rondo unless his salary demands threaten to sink the entire ship.  
Rondo and Perk are the foundation of the post-GAP Celtics.  It's been so long since we had a true stud at PG (sorry Sherm, David, Kenny -- appreciated your efforts, but you all were merely good as C's).  Now we have Rondo who by all accounts is approaching all-star caliber and still improving.  
I don't want to risk watching our offense quarterbacked by the next Corchiani, Telfair, Banks, or Greene.