With a game as amorphous as Saturday afternoon, it seems like it's been 18 times I've written this today, Dominique Ducharme had to shuffle his roster and that's exactly what he did at the beginning of the game against the Anaheim Ducks.
Should Jeff Petry miss any time, Sami Niku will take his place. Note that Chris Wideman will definitely be in the lineup, while in the case of Niku, it will depend on the condition of number 26.
As for the lineups, everything will depend on the situation of "Gally", so we will know more during the warm-up.
In closing, you should know that the members of the Montreal Canadiens are not affected by cases of COVID-19. I remind you that the San Jose Sharks have seven players on the NHL's COVID-19 protocol list, and the Habs played against them last Thursday.