Pittsburgh forward Derick Brassard, acquired from the Ottawa Senators in a three-team trade on Friday, has yet to report to the team because of visa issues.
The Penguins, who have a one-point lead over the Washington Capitals for first place in the Metropolitan Division, defeated the Carolina Hurricanes 6-1 on Friday.
Roberto Luongo will make his third start in four games for the Panthers since returning from a groin injury. Florida is five points behind the Columbus Blue Jackets for the second wild card into the Stanley Cup Playoffs from the Eastern Conference with three games in hand.