The Bruins made a pretty weird move by firing Bruce Cassidy. He obviously got hired by the Vegas Golden Knights, and to be honest, it was probably the best thing that could happen to Cassidy.
If you are David Pastrnak, do you really want to stay there? No. Pastrnak has a lot of elite hockey to give and he wants to win. Fluto Shinzawa, who is a Bruins reporter for The Athletic, even said recently that if Don Sweeney is staying with the Bruins, there would be no chance that Pastrnak signs an extension with the team.