Gabriel made his first full start in the Premier League in Arsenal's 2–0 home win over Everton on 1 March. He experienced a shaky start to the game but later executed a perfect sliding tackle on the goal-bound Romelu Lukaku, cleanly winning the ball. He was an unused substitute on 30 May, as Arsenal won the FA Cup Final 4–0 against Aston Villa at Wembley Stadium.