At this stage of the offseason, most NHLers are under contract and gearing up for the next season. Phil Kessel is not like most NHLers. He currently remains unsigned but he was spotted training ahead of the next season.
Kessel training with the Vegas Golden Knights could be one of two things. First, he is training with the team he will be playing with next season and getting ready for another cup run. Second, he could be getting in shape for the upcoming season and is just training with his former teammates.