Byron was nearing his season debut but that will have to wait now that he has been added to COVID-19 protocol.
Primeau was scheduled to start Thursday in Carolina but likely won't be available now. Expect Samuel Montembeault to start every game until Jake Allen is back.
Matheson was one of five players added to the protocol list on Monday, bringing the Penguins total to six. This group will likely miss at least the next two games.
It's unclear what this means for the status of Jake Allen or Samuel Montembeault but Primeau will likely backup regardless of who is ailing. Primeau is 8-6-1 with a 2.77 GAA and .912 SV% in 16 AHL games this season.
Anderson's original timetable was 2-to-4 weeks but has been downgraded. Anderson will likely be out until at least the end of January/early February.
Gallagher has been out since November 29th but could return by this weekend. Gallagher won't re-join the team immediately, which suggests he won't play Thursday vs. the Flyers and is more likely for Saturday vs. the Bruins.
Dvorak suffered a lower-body injury vs. the Lightning last Monday and will miss an extended period of time. The Canadiens announced that Dvorak is out indefinitely and will be monitored and evaluated daily.
Evans missed Saturday's game in St. Louis but was on the ice for Monday's practice and could play Tuesday. However, he remains questionable, so monitor his status as the Canadiens hit the ice for warmups at 6:30 PM ET.
Laine has been out since November 3rd but appears close to returning to the lineup after joining the team in Vancouver. It's unclear whether or not he is ready to play Tuesday but travelling is a great sign for Laine.
Armia missed the last two games with an undisclosed injury but is expected to replace Jake Evans (undisclosed) in the lineup on Saturday. Armia has one goal and four assists in 26 games this season.
Evans is day-to-day with an undisclosed injury, so he'll come out of the lineup in St. Louis. Joel Armia is expected to return to the lineup to replace Evans.
Gallagher is doubtful to be in the lineup on Thursday after being moved to the COVID-19 protocol list this morning. With Gallagher likely out, look for Cedric Paquette to draw back into the lineup.