Unless this game has alot of up and down flow, I'm not liking gallagher and desharnais on the same line. Its just a recipe to lose puck possession when the puck is around the boards. That's not a knock against these guys, its just not a good mix imo.
Maybe swap Gallagher with Galchenyuk or Eller.
Lets see if the habs can finally eliminate neutral zone turnovers against the leafs. Also, the forwards need to support their D better against the speedy leaf forwards. Markov/emelin pairing could especially have a tough night if they get no support.