Team Talk reported on Harrison's loan move to Shrewsbury Town for the 2025/26 season. Harrison is spending the 2025/26 season on loan at Shrewsbury Town, which is managed by former United academy graduate Michael Appleton. Although Harrison missed the first two games of the season due to injury, he made an impressive debut against Grimsby Town in the Carabao Cup by saving a penalty, even though Shrewsbury Town eventually lost 3-1. Appleton praised Harrison's performance, noting his capability in making saves and his skill with the ball. Following this performance, Harrison made his League Two debut in a 2-0 defeat at home to Colchester United.