Date of birth
Known as 'Crickey', 18 year old Gallagher was offered his first professional deal with the club in 2017.
He had been an ever present in the under-18s during his two year scholarship, forming a good partnership with fellow graduate George Hughes.
Chris has represented Northern Ireland through the age groups and most recently appeared for their Under-19 side.
He joined Stalybridge Celtic on-loan in December 2017.