Marc-Andre Bourdon is out indefinitely with concussion issues again. He was injured earlier this month, while playing for AHL Adirondack, on a check that rattled his head off the glass. Philadelphia sent him to the minors last month after he was cleared to return from a concussion. Bourdon didn't play last season because of concussion problems, but he skated in 45 games with the Flyers in 2011-12.