Josh Clarke, born on 28 July 2004 (age 21), is a Northern Irish goalkeeper whose early move to Celtic has so far been followed by most of his senior football elsewhere. He joined Celtic from Glenavon in August 2022, a sensible development step rather than a headline-grabber.
His first-team experience began to build away from Glasgow. A spell at Ayr United in 2023-2024 gave him 12 league appearances, but it is Partick Thistle that has come to shape his career to date. On loan there, he has become a regular rather than a squad ornament.
In 2025-2026, Clarke has made 33 Championship appearances for Partick, with further involvement in the League Cup, Scottish Cup and Premiership play-offs taking him to 41 appearances in all competitions for the club. For a young goalkeeper still tied to Celtic, that is the useful bit: games, responsibility, and a place in a side where he is being used every week.
Clarke’s career is still at an early stage, but its outline is clear enough: Glenavon to Celtic, then senior minutes through loans, with Partick Thistle providing the main body of work so far.