Arsenal manager Arsène Wenger announced that Campbell would be part of his first team plans for Arsenal's 2014–15 season. On 2 August 2014, Campbell scored in Arsenal's 5–1 win over Benfica in the Emirates Cup. Eight days later in the 2014 FA Community Shield, he replaced Aaron Ramsey for the final five minutes of the 3–0 win over Manchester City at Wembley Stadium. He made his Premier League debut on 23 August in a 2–2 draw against Everton at Goodison Park, coming off the bench to replace Alex Oxlade-Chamberlain on the 74th minute of the match.