Munn is a graduate of the Rangers Academy, having made the move from Northern Ireland to turn professional in 2022.

He was an ever-present for the Under-18s in his early years and produced an impressive performance at Hampden Park in the 2024 Scottish Youth Cup final triumph.

The Northern Irish youth international made his first-team debut in January 2025 in a Scottish Cup victory over Fraserburgh at Ibrox.

Last season, the goalkeeper spent time on loan at both Dunfermline Athletic and Forfar Athletic.