He is on the books of Trelleborgs FF and wears shirt number 26. His main role on the pitch is Midfield.

His latest transfer saw him join Pittsburgh Panthers (University of Pittsburgh) from Trelleborgs FF via on 2025-08-01.

Over 1 appearances in the International Club Friendly 2025, Loke Mattson contributed 0 goals and 0 assists, completed 0 key passes from 0 total passes, and posted a passing accuracy of -.