After spending 2024 on loan from Leigh Leopards, Gannon’s move to the LNER Community Stadium was made permanent in the off season.

It was the 22-year old’s second spell at York, following on from two appearances for the club in 2021 on loan from Warrington Wolves. In 2024, he made 18 appearances, scoring two tries.

A former England Academy International, Gannon joined Leigh at the start of 2023.

Since then, he's spent time on loan at Halifax Panthers, London Broncos and Rochdale Hornets, before moving on to the Knights, where he’s earned a reputation as a hard working forward.