Arsenal legend Paul Merson believes that the Gunners must win their home game against Manchester United on Sunday.

The Gunners suffered a disappointing Champions League loss against Olympiakos on Tuesday and according to Merson, only a win on Sunday can lift off the pressure off Arsene Wenger.

He told Sky Sports: "Arsenal have to win this game otherwise Arsene Wenger will be under severe pressure.

"The game will probably go how it does all the time. Arsenal will turn up, dominate the game and United will break on them and score.

"Despite that, I'm going to go for an Arsenal win because they simply have to."