He currently plays for SD Amorebieta, wearing the number 10 shirt. He plays primarily as a Forward. He stands at 180cm tall and weighs 65kg. His current market value is estimated at 150K .

His most recent move was a from SD Gernika to SD Amorebieta on 2025-07-01.

In the Spanish Segunda División RFEF 2025-2026 season, Mikel Arzalluz scored 0 goals and provided 0 assists across 22 appearances, averaging 0 goals per game with 6 shots attempted and 4 on target.