 He made his competitive debut in a 1–0 defeat at home to Watford on 3 August, and his first competitive goal for the club opened the scoring in a 3–2 defeat at Leicester City three weeks later.Green scored the second goal, "a superb right-foot finish at the back post" from Mitch Hancox's cross, as Birmingham beat holders Swansea City 3–1 in the third round of the League Cup.He started the next three games, without scoring, but was omitted from the matchday squad thereafter.