Mike Green skated for about 20 minutes Thursday morning but left the ice when the rest of the Capitals started the morning skate. Coach Bruce Boudreau said he’s hoping that the defenseman may be able to start working out with his teammates as soon as Friday.

Green hasn’t played or practiced with the team since he suffered a concussion on Feb. 25, when he was hit by the New York Rangers’ Derek Stepan. The two-time Norris Trophy finalist has completed light skates for four consecutive days this week, but on Monday said Green said he was still experiencing some symptoms.

“He’s coming along well,” Boudreau said. “And I say that hoping that tomorrow — again, it’s Bruce hoping — that he might be able to come out with the team.”

As for the other injured Capitals defenseman, Tom Poti skated for a second consecutive day, which has been something of a rare activity for the vet­eran who has been hampered by a nagging groin problem for most of the season.

Asked if Poti’s work for a second consecutive day was a positive sign, Boudreau replied: “Hope so. It’s like syrup running down a tree: It’s slow, but at least it’s progress. It’s getting there.”