Watch: Arsenal beat AC Milan to reach quarter-finals of Europa League

Arsenal completed a 5-1 aggregate victory on Thursday (March 15) over seven-times European champions AC Milan, winning 3-1 on the night in north London after the Italians had scored first.

Hakan Calhanoglu's stunning strike put Milan ahead but the lead lasted only four minutes as Danny Welbeck was awarded a highly-dubious penalty, falling to the ground despite apparently no contact from Milan defender Ricardo Rodriguez.

Welbeck converted the 39th-minute penalty and added a late header after Granit Xhaka's goal had put the tie beyond Milan.

Gattuso said he didn't want his team to dwell on the controversial decisions in the game and said he understood why players look for an unfair advantage. He also offered his apologies to Arsenal defender Nacho Monreal for throwing the ball in his direction after also apologising to him on the pitch.