Don’t expect to see Sidney Crosby back on the ice soon.

A source told sportsnet.ca the Pittsburgh Penguins superstar tried a light workout last week, but shut it down after seeing “stars and black dots.”

This is common for players who have suffered from concussions.

The Pittsburgh Tribune Review quoted a source from the “Crosby camp” denying Crosby had troubles after light workouts. Crosby stopped workouts late last week and returned to his parents home in Nova Scotia to continue his recuperation. There is no timetable set for his return.

Crosby was hit in the head New Year’s Day in the Winter Classic in Pittsburgh and again in the following game when he was knocked into the boards by Tampa Bay Lightning defenceman Victor Hedman.

He has not played since.

Penguins general manager Ray Shero said “nothing has changed” regarding the status of Crosby, who is not symptom-free and remains cleared for only light exercise.