#1 Alexis Sanchez
Alexis Sachez joined Arsenal in the summer of 2014 after some impressive performances at the 2014 World Cup in Brazil. He did not disappoint. He scored 60 goals in 122 games for the Gunners and became a fan favourite.
In his last full season with the club, he scored a vital goal in the FA Cup Final in the 2-1 win against Chelsea. There were many times during his Arsenal career that he saved them from embarrassment.
However, after Arsenal failed to qualify for the UEFA Champions League for the 2017/18 season, he expressed his desire to leave the club. He left Arsenal in January to join Manchester United.
Things have not gone very well for him at Man United, and some feel he may rejoin the Gunners if the right offer comes his way. Others argue that he is past his best and it is not surprising that he is not playing well.