Priority to trade: Deng, Jack, Miles (plus Clark and Gee)
Deng: Should at least be able to recoup the type of assets we gave up to get him, plus a large expiring.
Jack: But you absolutely don't send out any assets with him. At worst, you get someone on a moderately bad contract who may fit better.
Miles: Has played well and is expiring so has value. Might be able to get a late first from a contender. Plus you will get back a cheap guy to make salaries work, and you be able to able to get something of value in this player.
Clark: Seriously, I can't imagine a team wanting him, unless it is to make salaries match in a larger trade. If a team is willing to give a second rounder for him plus an expiring, fine. Or if a team is giving up on a young player who may still have some potential (picking a random name, Biyombo).
Gee: Pretty much the same as Clark, but I suspect even less value.
Consider trading if the right trade comes along, but I don't think you are going to get what you want unless it is a larger trade with many parts:
Varejao: Sort of hard for me to believe he'll be traded now, but maybe with the new GM...
Thompson
Waiters: I'd look into trading him in the off-season though. You'd be selling low right now.
Zeller
Don't want to trade:
Irving: But hey you never really know...
Bennett: Just starting to show what he can do.
Karasev: Completely unknown what he can do in the NBA.
Delly: Shown to be more valuable than simple "trade filler."
Trade filler -- include in trade if necessary:
Sims
Felix