"He's slowly starting to get back on track, and hopefully he'll be back soon," Cooper said in a statement.
Tre Kronor's star defender and Tampa Bay's team captain has not played since he missed three games due to illness and then took a break for personal reasons on March 25.
"He's coming along for the ride. But like I said, he's probably not available right now. It's the playoffs, so we keep things internal," Cooper said.
Tampa Bay faces Montreal in the first round. The first game will be played on Sunday night.
