Zether suited up for all 15 of the team’s postseason games and scored his first-ever goal in the league. In addition to his time in the top division, Zether also played 18 games for Rögle’s J20 squad. The 2024-25 season saw Zether spend the majority of his time on loan to Västerås IK of the second-tier HockeyAllsvenskan. After attending his second development camp with the Panthers in the summer of 2025, Zether fulfilled expectations by returning to duty in the SHL with Rögle. The Panthers have until June 1, 2028 to make a decision on Zether.