Teams with scorers but lack a good PG include may be trade territory for Rondo:
Chicago, Utah, Detroit, Sacto, Indiana, Houston Toronto, Phoenix
Miami (no way Danny lets Rondo go the the Heat) NO (Rivers has been a bust and needs much more development than originally thought). NYK or LAL (long shots but we are looking to add youth for the future). I'm convinced that Sacto will not trade Cousins.
Teams with excess C or F/C Big men or soon to become FA are teams that Danny must be looking at:
Toronto, Phoenix, Lakers, Atl, Grizz, Warriors, NYK, Utah (more?)
By process of elimination, Utah (Williams PG - Big Al) and Phoenix (Dragic PG - Gortat) arei most likely candidates for trade talks, but we could get Big Al or Gortat without trading Rondo.
My conclusion is that a Rondo trade would likely involve a PG/C, not a true center, and would involve three teams.