There is a young forward there who has been slow to reach his potential and might benefit from a fresh start.
Alexander Holtz, the 7th overall pick in 2020, is looking to break out. His 28 points in 82 games this season are not sufficient, and given the offensive talent in New Jersey, trading him for a defenseman makes sense.
The two general managers completed a trade a few months ago for Jake Allen, so they certainly have a good relationship.
Stay tuned, but keep Holtz's name in mind. He could well be the Canadiens' new Kirby Dach or Alex Newhook.