Zidlicky (concussion) is unsure whether he wants to keep playing, Ted Kulfan of The Detroit News reports. The 38-year-old blueliner suffered a concussion during the playoffs, and while he doesn't have an extremely notable history of similar injuries, it's certainly not the first concussion of his career. Between his age and long-term health concerns, Zidlicky may find it hard to justify playing another season. If he does decide to continue his career, he'll be an unrestricted free agent.