Gill began training at the Manchester United academy, and was first involved with the Under-18 side in April 2006, when he was named as an unused substitute in a 3–2 away defeat to Sunderland.
His first appearance for the Under-18s came more than a year later, as he started in both of the final two games of the 2006–07 season: a 4–0 away win over Sheffield United on 21 April 2007 and a 1–0 home defeat to Sunderland a week later.
Following his first full season in the Under-18s, Gill got his first taste of reserve team football in July 2008, when he made two substitute appearances in pre-season friendlies against Altrincham and Oxford United.
45, and a defensive injury crisis meant that he travelled with the first-team to Germany for their final Champions League group stage game against Wolfsburg on 8 December.
[5] On 29 September 2010, Gill and his Manchester United Reserves team-mate Reece Brown joined Bradford City on a short-term loan deal until 25 October.