Rondo was an allstar starter before being injured, and is just getting on the mend now.
Injury aside, what return should an allstar starter (and leader in jersey sales) bring in a trade?
Rondo can battle pretty much anyone in the league at his position to a draw, at least. Let's not be in a hurry to give that up for the uncertainty of draft picks.
Unless it's a top-5 pick, another allstar, or some other sure-thing, just keep #9.