Aside from a non-hockey issue, Molson is not going to fire Bergevin unless he thinks MB is responsible for adversely affecting the club's bottom line. The Habs will likely miss the playoffs this year, that probably means a minimum of $5 million in lost playoff revenue, and that should sting Molson at least a little. However, if Carey Price continues to have such an off year, then I won't be surprised at all to see MB getting at least one more year.
When the Canadiens went into free-fall a couple of years ago, Therrien was given one more chance to see what he can do with a healthy Carey Price before he was finally fired. Even it is only because MB is owed at least a couple million a year for another 4 years, I wouldn't be surprised to see him given a similar chance next year with Price hopefully having returned to form.