Montour (personal) will play Saturday against Ottawa, according to Kraken TV broadcaster Piper Shaw.
Montour will not be available Thursday in Toronto, as he has returned to Seattle for the birth of daughter, Terry Koshan of The Toronto Sun reports.
Montour agreed to terms on a seven-year, $49.98 million contract with Seattle on Monday, Elliotte Friedman of Sportsnet reports.
Montour notched a helper on the game-winning goal in overtime in Tuesday's 3-2 win over New York in Game 4.
Montour registered an assist and four blocked shots versus the Lightning in Game 4 on Saturday, but it still wasn't enough, as the Panthers suffered a 6-3 loss.
Montour produced a goal and an assist Thursday in a 5-3 win over the Lightning in Game 3 of the Panthers' first-round series.
Montour scored a goal on three shots in Tuesday's 5-2 victory over the Maple Leafs.
Montour picked up three assists in a 4-1 win over Philadelphia on Sunday.
Montour scored the game-winning goal and added two power-play assists in Saturday's 4-0 win over the Red Wings.
Montour scored the game-winning goal on the power play and added two assists, one with the man advantage, in Tuesday's 3-2 win over the Sabres.