Without giving up Rondo, I would think it would take something like Bradley and Sullinger for them to even pick up the phone (not that they would do that, but that would at least get the teams talking).
Now if you move Rondo, I think there could be a trade there, something centered around Haywood and Burke for Rondo with various other pieces, but even then I'm not sure Utah does it as I don't think Rondo fits what they are currently doing (before they let Millsap and Jefferson go, I think they would have been more inclined to acquire Rondo, but not now).