Although Clarke was scheduled to join Partick Thistle after agreeing a pre-contract, interest from Doncaster Rovers has now made the transfer uncertain. Clarke, who was on loan at Partick Thistle for the 2025/26 season, started 33 Scottish Championship matches and established himself as a key performer. His displays had led Thistle to agree a permanent move in February 2026.

Josh Clarke has completed a transfer from Celtic to Partick Thistle for an undisclosed fee.

The Championship side Partick Thistle announced that goalkeeper Josh Clarke has agreed to a permanent move to Maryhill. Clarke is currently on loan at Firhill from Celtic. Clarke and his teammate Ben McPherson will stay with Partick Thistle until the end of the current season, and Clarke will complete the move in the summer. The goalkeeper has impressed this season, having featured in 23 matches for the team managed by Mark Wilson. Clarke’s contract with Celtic was scheduled to continue until next season, which makes his departure an early exit.