Double hip surgery is a long recovery for anybody, let alone an NHLer. Gagner's hips were likely affecting him last season as he had a relative down year scoring only 14 points in 48 games with the Winnipeg Jets.
Hopefully, Gagner can recover quickly and quickly prove to be more than worthy of an NHL spot by impressing in the AHL. If not, this could be the end of his NHL career at only 34 years old.