Reportedly, Montreal wants him badly. And let's not forget that he is French Canadian, which could be a very important thing in his decision. For next season they are doing well with the salary cap
https://puckpedia.com/team/montreal-canadiens not to mention that the NHL salary cap will increase. Therefore, they could give him a higher contract, which could make the difference. And having Olivier on the team with A. Xhekaj, maybe even F. Xhekaj... . Nothing nice. With both players being ruled out in fights.