Edmonton Oilers forward Evander Kane was expected to need four to eight weeks of recovery time after undergoing successful knee surgery, the NHL team said Friday.

The Edmonton Oilers may face an investigation from the NHL if Evander Kane is unable to return until the playoffs, but insider Frank Seravalli believes the Oilers should be safe from anything being found.

Evander Kane had knee surgery Thursday, with an expected recovery time of 4-8 weeks. The procedure was unrelated to abdominal surgery the Edmonton Oilers forward had in September, but he will need to pause his rehabilitation schedule in order for his knee to recover.