Trade Rondo in a sign and trade with Lakers for Pau Gasol, the 7th pick and Lakers' 2nd round pick. Package the 6th and 7th to move up to get Exum or one of the big 3 (would love Embiid, but doubt that would be enough value). If Exum, use the 17th pick for BPE (I like Porzingis, the Latvian kid, but would be happy with KJ McDaniels or Payne), if one of the big 3, draft Ennis or Payton for our new PG. Use 2nd round pick on BPA, maybe local kid Shabazz Napier.
I propose this only assuming we have decided to trade Rondo. You will not get proper value for him if you trade him to a team like Sacramento where there is little chance he will agree to re-up with them. He is much more likely to agree to extend with them, and therefore much more likely to get proper value for him. This trade works because it is a toss up as to who the best player in the trade is/will be. A case could be made that Exum will become at least as good as Rondo. Certainly not in that class today, but you could his prospective value is at that level. No other realistic trades would result in that type of return of value. Plus you get the bonus of a great starting center in Gasol, if healthy, who would probably rotate pretty well with Sully and Kelly.
The biggest objection to this trade is the fact it is with the hated Lakers. But it's our objective to make this team as good as possible, and if helping the Lakers at the same time is the only reasonable way to do it, I'm okay with that. And believe me, no one dislikes them more than I do.