Career
Harness made his first team debut in July 2011 when he was 15 coming on for the last 10 minutes in a pre-season frendly with Derby County for Burton Albion. He made his first competitive appearance in the 2013/2014 season on 3 September 2013 in a 1–0 defeat against N ottinghamshire County in the Football League Trophy. He made his League Two debut on 22 March 2014, coming on for Alex MacDonald, 68 minutes into a 1-0 defeat to Scunthorpe United at Glanford Park.