THT will have to go to a young team who isn't trying to win. Let's face it, the PG competition in UTA isn't fierce at all and he still can't get on the court. You have to scan the teams who are bad and might be willing to take a flier on him. Look for the older players on crappy rosters:
Delon Wright
Alec Burks
Doug McDermott
Luke Kennard
Of these guys, we could maybe reroute them to another team. I think Delon and Alec make a lot of sense for NYK and we get a second or two. I kinda wonder if those two might have a shot at starting over Dunn with us. Who knows. McDermott probably toast and no one wants him. Kennard we likely have to give up a second or two, but no spot in the rotation for him right now.
The other way to use THT would be simply as salary filler as he is an expiring contract. Either on his own or as a package deal, but if the Jazz aren't trying to break up the good vibes, I don't see the Jazz moving Clarkson or KO who would be the veterans other teams might have interest in. I could see them stacking THT with Clarkson or Olynyk in a trade to GSW. John Collins will not interest GSW. Remember, any future money for GSW is multiplied.
As far as the OP trade, that is more or less a straight up trade Simone for DFS, THT has no value. While Simone has played great, I think you're dreaming if he's built up enough of a reputation to yield DFS.