Toronto would never trade for Trouba. Afterall he's stated he wants to play in the U S and has only 1 more year on his deal. Why would Toronto give up anything near his worth in that situation?
He is still RFA controlled. Though pretty much every Wings fans is waiting with a smile for the day he becomes an UFA. But it is still pretty far off, but the rumors around him seem like Detroit would have to royally screw up their pitch to not get him if he ever did become an UFA.
Obviously he could land somewhere else and that could all change. It is just my opinion, but I am fairly certain his days with the Jets are still numbered. I would be pretty surprised if he is still in that organization after July this summer. I think something gets done at the draft.
As a Wings fan I would give what is looking like a Top 5 pick for him. 2nd pick is a little tough, but even there you give that a good long think in my opinion. I pick Patrick one and don't consider that. But that should be the starting point for the Wings in this deal. They look like they are going to have a very high pick as a starting point in talks.