The question I have, and which I assume the front office has a handle on, is: how much money is a draft pick worth? How much would you spend to buy a lottery pick, or a late first-rounder, or a second-rounder?
Because that's essentially what the Cavs are looking to do: peddle off their expiring players, take back longer/more expensive contracts, and acquire draft picks for that service. The players themselves are almost irrelevant from the Cavs' point of view (i.e., they didn't trade for Alec Burks because they wanted him; they traded for Burks because his salary made the trade work).
So how much salary relief do the Cavs need to give to get a low first rounder? A possible mid-first rounder? A possible lottery pick? I guess we'll find out over the coming months.