I'm assuming the situation is a lot more complicated than him just wanting to play on the other side.
Now who's the one just speculating randomly.
Trouba wanted out because he wasn't being offered what he believed he was worth, hence a difference of 3M in arbitration numbers. His usage played a role in it as well but it's really not that uncommon for guys to get upset about usage. Especially when they're big impact players like Trouba. Dmen most often times prefer to play there strong side and dont like playing the weaker side. Trouba wanted to do this so he could contribute to the team more and it wasn't happening in Winnipeg.
The thing about this is it was 3 years ago and nothing ever came of it really. Trouba started playing on the Right side and started playing much better and bigger minutes for the Jets and the Jets got better. Now it's plain and simple coming down to a contract situation where he just wants to get paired fairly. It probably wont happen in Winnipeg because of the cap situation they are in.
He could be a good fit in Colorado, especially if we had another deal lined up to move EJ out. He's essentially a younger prime EJ who's also better than Prime EJ and with Girard/Barrie/Makar I think Trouba would be a damn near perfect fit to our current Top 4 Makeup. Pair him with Girard and let Barrie/Makar run wild on a 2nd pairing.
It wont happen since Winnipeg isn't trading him to a divisional rival, but it would be a great fit.