The Habs are Niemi's third team of the 2017-18 campaign. He signed a one-year deal with the Penguins in the offseason, but was placed on waivers after just three games. He then had a two-game stint with the Panthers before being placed on waivers again.
His numbers this season aren't pretty. He owns a record of 0-4-0 with a 6.74 goals-against average and an .822 save percentage.
If Niemi does appear in a game for the Canadiens, he'll tie the NHL record for the most teams played for in one season by a goalie, per TSN's Kevin Gibson.