Manchester United boss Louis van Gaal has won a trophy in his first season at every club he 's managed , except for AZ Alkmaar . United lost 2-1 against Arsenal in the FA Cup quarter-final on Monday night at Old Trafford , all but ending Van Gaal 's search for silverware in his debut season in England . Van Gaal won the Uefa Cup with Ajax in his first year , the La Liga title with Barcelona and the Bundesliga and DFB Cup with Bayern Munich previously . Louis van Gaal pictured on the sidelines during Manchester United 's 2-1 defeat by Arsenal on Monday night . Van Gaal has won a trophy in his first season at every club he 's managed , except for AZ Alkmaar . United lost 2-1 against Arsenal as they must now concentrate on qualifying for the top four . The Dutchman 's night only got worse on Monday as former United players showed what they were lacking at the Theatre of Dreams . Nani scored for Sporting Lisbon , Paul Pogba sent Juventus 11 points clear at the top of Serie A with a screamer , and it was Danny Welbeck who found the winner for Arsenal at Old Trafford . United will now concentrate on finishing in the top four of the Premier League as they fight with Arsenal , Liverpool , Tottenham Hotspur and Southampton for Champions League qualification . Van Gaal pictured during his time with AZ where he failed to get a trophy in his first season .
Manchester United lost 2-1 against Arsenal in the FA Cup quarter-final . It all but ended Louis van Gaal 's search for silverware in his first season . Van Gaal has only not won a trophy at AZ Alkmaar in his first year in charge . Ian Ladyman : Manchester United are playing Hackney Marshes football . READ : Man Utd v CLICK HERE for all the latest Manchester United news .