I think Trocheck might be off the table now. Before Trouba was moved (with no retention) I thought they might have to sacrifice a guy like Trocheck because of cap concerns/likely inability to move Zibanejad. But because we didn't have to eat anything on Trouba (and Kakko off the books now too) this is less of a concern.
I am sure the Canes could make a good deal for Trocheck though. Unfortunately (?), I don't see any Trocheck to CAR deal that would not include Jack Drury and the optics of that right now would be exponentially ugly; so I just don't think there is a deal here.