Former Arsenal striker Paul Merson believes Arsene Wenger and Manchester United boss Louis van Gaal are playing for their futures in Monday's FA Cup tie.

Merson wrote in the Daily Star: "Whichever manager loses out when Manchester United and Arsenal clash in their FA Cup quarter-final will be under severe pressure.

"Whoever goes out of the cup will just be playing for the top four - and neither team is guaranteed to finish in there this season.

"You can't tell me that either of those managers will still be in a job next season if they go out of the cup and don't finish in the top four.

"Van Gaal has spent a fortune and has to qualify for the Champions League. Winning the FA Cup might save him. Not doing either? It's goodbye.

"But I don't think winning the FA Cup would be enough to save Wenger if they don't finish in the top four again."