If Montreal is giving him away, I'd be happy taking him. If they're looking for "****, we traded PK Subban for this guy" rates, then hard pass.
He's 34 with a lot of hard miles, is a legit injury risk going forward and still carries a pretty significant cap hit (7.85m). Still a nice player, but there's a lot of risk there.
6 would put you over the top and in the finals , exactly what you need
He plays with nobodies in Montreal and is having a solid season
He will age very well like Chara and he is 42