Date of birth
Born: Stockport, 30th November 1995
Callum is a midfielder who made two substitute appearances for Dale towards the end of 2012/13 while still a scholar, with his performances later earning him his first professional contract.
The 21-year-old regularly represented Northern Ireland at youth level and was called up to their U21 squad in October 2015.
Shortly after, he penned a contract which will keep him at the Crown Oil Arena until summer 2017, although that deal has since been extended by a further 12 months.
Callum captained the first team on a number of occasions during the 2016-17 season.