Staal registered 22 goals and 52 points in 81 games while averaging 18:08 of ice time this season.
Staal scored a power-play goal but was a minus-2 in Saturday's 5-1 loss to Carolina.
Staal notched a power-play assist in 24:49 of ice time in Sunday's 3-2 loss to the Islanders.
Staal signed a two-year contract extension worth $3.25 million AAV on Monday, Bob McKenzie of TSN reports.
Staal is pointless while averaging 18:29 of ice time in his past five games.
Staal generated a goal and an assist in Monday's 4-2 win over the Golden Knights.
Staal scored a goal and added an assist in Thursday's 5-2 loss to Chicago.
Staal has just five points in 10 games in the month of December.
Staal (illness) will be in action against the Kings on Thursday; telling reporters, "I feel good. I don't think I'm at 100 percent, but I definitely feel a lot better...good sweat today and hopefully a great game tonight."
Staal (illness) will travel with the team but may not play Thursday against the Kings.