Those out of contract - Butler, Moore & Menadue - have no trade value. An opposition club can just wait for them to be delisted and pick any of them up for free as a delisted free agent. We'd only a get a late pick back if there's a couple of clubs wanting the same player and one of them is willing to trade for him.
Only Markov and McIntosh have any trade value as they are still contracted. Even then Markov would be only worth a late pick as well.