My preferences:
top option is to rescind that deal to get that pick back.
second best option is to do the deal as is
likeliest situation is that the C's throw in a second rounder
worst case is the C's throw in another first rounder or worse yet, Brown or Tatum
I think Cleveland should rescind the trade. It makes sense for them if IT really is going to miss most of the season.
It also saves some face in that it justifies the initial leak that the injury was worse than appeared from Cs reports.
If the take it as is after all this drama, the Cavs will look dirty.
If the Cs cave and give anything extra, they will look like liars. If they give anything of major value, this will change the NBA forever.