Use the concept of negative painting and it becomes a little clearer why Z is the trade speculation. Instead of looking at who might be moved, look at who won't be moved.
Leo and McTavish seem to make the coaches and Verbeek happy. They bring skill and character to the team that I don't think Verbeek wants to lose. Unless it's a trade he wins big in, I don't think he would move them.
Terry didn't have a good year. But as the team grows in experience, I think it will suit his style more. Also, he's always been a little slow on the development curve, but steady at improving. I think the guy will continue to get better. Doesn't seem to be physically damaged, only 7M a year (if he's grows to be a 35-40 goal scorer), already locked up for multiple years, good character and work ethic/approach. I just can't see a reason to move him. Kind of Silfverberg in the sense that there's always someone else to focus on dealing with trade wise.
Vatrano is not going to be traded unless he can't be extended. The guy brings an energy to the team that it needs and Verbeek caveats. Probably why Zellweger is the smaller defender we kept. The team just is more alive when he's on the ice.
Cutter and our first pick are Verbeek choices. Until they play themselves out of favor, they're not going anywhere.
Killorn was brought in for character. He was overpaid for the same reason. He's a quality player when he's healthy. His contract is probably not movable until the last year. I don't see him going anywhere. Strome is probably the same situation less the talent.
So there you go. That leaves Z. He has potential talent and is a draw. Not what would keep him here, but might make him desirable to another org. The fact that he has a sense that he's worth more than he presently is, only adds to this. I don't think Verbeek wants to trade him. But i do think he has less holding him back from making a deal that would give the team more experience in a equally talented player (By equally talented, I mean would fit in to give the Ducks as much on the balance.)