 It wasn’t until on 30 December 2017 when he returned from injury, coming on as a 72nd minutes substitute, in a 3–2 loss against Bradford City.Mehmeti then played a role in the last of 16 of the Football League Trophy against Charlton Athletic, converting the winning penalty–kick, as Oxford United won 3–0 in the shootout following a 1–1 draw on 9 January 2018.As the season progressed, he later found himself in and out of the starting line–up for the side.