Matthias (head) was on the ice for the Canucks' morning skate but remains questionable to play Tuesday versus the Canadiens, Ben Kuzma of the Vancouver Province reports. Coach Willie Desjardins said he had no update on the condition of Matthias, who was held out of Sunday's game against the Senators after taking a shot to the head a night earlier. The Canucks' team doctors will likely evaluate Matthias as the day progresses to determine if he's suffering from any concussion-like symptoms before determining whether or not he'll be able to suit up Tuesday night.