Oscar Klefbom News: Klefbom suffered a concussion after being elbowed in the head Tuesday, Dan Tencer of the Oilers Radio Network reports.

Klefbom suffered a concussion after being elbowed in the head Tuesday, Dan Tencer of the Oilers Radio Network reports.

It's been a rough year for Klefbom, who saw his 2013 season end before it even began in November when he suffered a shoulder injury playing in the Swedish Elite League. Now he'll have to wait to be cleared of concussion symptoms before being allowed to return to the ice, which the Oilers are hoping will be sometime during training camp.