Article in HC DalenRead the source, from Taberg, started playing hockey at HC Dalen’s hockey school at Smedjan in Norrahammar. He played for Dalen through the U15 age group, and when he recalled his youth hockey years in June 2025, he singled out coach Article in HC DalenRead the source for pushing him to improve.
In April 2023, HV71 announced that he had been admitted to its autumn A Swedish hockeygymnasium combines upper-secondary (high school) studies with scheduled ice hockey training.Article in HV71Read the source intake, an upper-secondary education with a hockey focus, and named HC Dalen as his original club. Article in HV71Read the source.
In his interview with HC Dalen on June 29, 2025, Leander said he had played neither TV-pucken is a Swedish youth hockey tournament played between regional representative teams.Article in HC DalenRead the source, the youth tournament for district teams, nor national-team hockey up to that point. Article in HC DalenRead the source.
Article in Calgary HitmenRead the source 13, 2026, the Calgary Hitmen announced that Leander had signed a WHL Scholarship and Development agreement. In the announcement, Article in Calgary HitmenRead the source highlighted his competitiveness and defending.