I doubt Danault gets moved. He is valuable piece to Montreal. If he goes, be at deadline. Montreal be out of playoff picture. Probably for a first in '21 Draft.
I doubt very strongly that happens. Big loss of value. I don't think you can do that with a player that important to your team. That being said, if what he wants is only cashing in on a big contract, with whatever team as a UFA, MB won't have much choices but to do what you said. i don't think Danault is that kind of player.
That being said, if he doesn't fit with Habs needs or cap structure anymore, you need to find a team that needs him, that can pay what he wants and a team he is interested to play with so he can sign an extension this summer. And i maybe see only 2 teams that would fit the bill : NYR and SJ.