 Complete the following phrase:  After making his debut for Arsenal in the 198687 season, Merson went on to play eleven seasons with the North London club. While with the Gunners, Merson was a key player in the clubs success under Scottish manager George Graham, winning the Football League Championship twice, the FA Cup, the Football League Cup, and the European Cup Winners Cup. In 1997, he joined Middlesbrough, helping the club gain promotion to the Premier League and finish as runner-up in the 199798 Football League Cup. After joining Aston Villa in 1998, Merson went on to become club captain and played for the team in the 