 On 1 December 2012, Miller netted two goals in the 90th minute for the Blades in a 2–1 win over Port Vale in the FA Cup second round.Miller then scored against Scunthorpe in a 3–0 victory on Boxing Day 2012, only to be taken off later in the match with what turned out to be cruciate ligament damage to his knee, ruling him out for almost nine months.Miller did not appear for the United first team again until 19 October 2013, in a 2–1 victory against Port Vale at Bramall Lane.