Callum signed in the summer of 2019/20 following mutual agreeing termination of his contract,
has been ever-present with a string of outstanding performances resulting in a host of clubs at higher level watching his progress, signing a new contract in February 2020.
Callum made 34 appearances following the premature end to the 2019/20 season in March due to the Coronavirus that null and void the season.

Callum joined National League North side Alfreton Town on a one-year deal in the summer of 2018 and at present has played 21 games and scored 2 goals. Following injured when out on loan to Boston United to get match fitness to play first-team football

In January 2018, he joined AFC Fylde on a loan for the remainder of the season, making 9 appearances.

Callum was signed by Peterborough in the Football League on a 2-and-a-half-year contract. He made his League One debut in March 2016 against Bury. Making 22 Senior appearances.

He then moved up the divisions to join National League North side Nuneaton Town in July 2015 making 29 appearances and scoring 2 goals up until Christmas, before moving into the football league with Peterborough United for an undisclosed fee in the January window 2016.

Signed Scholarship forms in 2012 and quickly made giant strides into the first team squad making his debut as 16 year old against Matlock Town, making him the youngest player to start a competitive game for the club then going on to make 96 Appearances scoring 4 goals and getting recognition by being selected in the Northern Premier League team of the year and being selected in the England C squad against the Republic of Ireland at the end of the season.

Callum started at Nottingham Forest as a youth before joining Northern Premier team Ilkeston FC aged 15 years old as an Academy Scholar.