Head coach of Bayern Louis van Gaal and head coach of Manchester United Sir Alex Ferguson attend the press conference during the Audi Cup 2009 . Getty
Louis van Gaal did lead Manchester United to glory in the 2016 FA Cup final, but his style of football was never truly embraced by the fans. Getty
Louis van Gaal Manager of Manchester United applauds the fans after winning The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016. Getty
David De Gea of Manchester United passes the trophy to Louis van Gaal manager of Manchester United after winning The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016. Getty
Louis van Gaal Manager of Manchester United lifts the trophy after winning The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016. Getty
Manchester United manager Louis van Gaal brings on Timothy Fosu-Mensah for Michael Carrick during the Barclays Premier League match between Norwich City and Manchester United. Getty
Louis van Gaal Manager of Manchester United and Ryan Giggs look on during The Emirates FA Cup semi final match between Everton and Manchester United at Wembley Stadium. Getty
Wayne Rooney of Manchester United talks to Louis van Gaal, manager of Manchester United during The Emirates FA Cup, sixth round replay between West Ham United and Manchester United. Getty
Louis van Gaal manager of Manchester United looks on as the South Stand is unveiled as the newly renamed Sir Bobby Charlton to honour 60 years since his Manchester United debut prior to the Barclays Premier League match between Manchester United and Everton. Getty
Louis van Gaal manager of Manchester United gives a thumbs up during the Barclays Premier League match between Manchester City and Manchester United at Etihad Stadium. Getty
Manchester United manager Louis Van Gaal poses for a photograph next to new signing Angel Di Maria at Old Trafford. Getty
Louis van Gaal manager of Manchester United reacts during the Barclays Premier League match between Manchester City and Manchester United at Etihad Stadium. Getty
Louis van Gaal Manager of Manchester United watches training alongside Jos van Dijk, Coach of Manchester United during a training session ahead of the UEFA Europa League round of 16 second leg. Getty
Louis van Gaal (L) Manager of Manchester United scratches his head while Ryan Giggs (C) assistant manager looks on during the UEFA Europa League round of 32 first leg match between FC Midtjylland and Manchester United. Getty)
Louis van Gaal manager of Manchester United and players look on during a foggy Manchester United training session on the eve of the UEFA Champions League Group B match against CSKA Moscow. Getty
Louis van Gaal appears at a press conference with Sir Bobby Charlton as he is unveiled as the new Manchester United manager at Old Trafford on July 17, 2014 in Manchester. Getty
Head coach of Bayern Louis van Gaal and head coach of Manchester United Sir Alex Ferguson attend the press conference during the Audi Cup 2009 . Getty
Louis van Gaal did lead Manchester United to glory in the 2016 FA Cup final, but his style of football was never truly embraced by the fans. Getty
Louis van Gaal Manager of Manchester United applauds the fans after winning The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016. Getty
David De Gea of Manchester United passes the trophy to Louis van Gaal manager of Manchester United after winning The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016. Getty
Louis van Gaal Manager of Manchester United lifts the trophy after winning The Emirates FA Cup Final match between Manchester United and Crystal Palace at Wembley Stadium on May 21, 2016. Getty
Manchester United manager Louis van Gaal brings on Timothy Fosu-Mensah for Michael Carrick during the Barclays Premier League match between Norwich City and Manchester United. Getty
Louis van Gaal Manager of Manchester United and Ryan Giggs look on during The Emirates FA Cup semi final match between Everton and Manchester United at Wembley Stadium. Getty
Wayne Rooney of Manchester United talks to Louis van Gaal, manager of Manchester United during The Emirates FA Cup, sixth round replay between West Ham United and Manchester United. Getty
Louis van Gaal manager of Manchester United looks on as the South Stand is unveiled as the newly renamed Sir Bobby Charlton to honour 60 years since his Manchester United debut prior to the Barclays Premier League match between Manchester United and Everton. Getty
Louis van Gaal manager of Manchester United gives a thumbs up during the Barclays Premier League match between Manchester City and Manchester United at Etihad Stadium. Getty
Manchester United manager Louis Van Gaal poses for a photograph next to new signing Angel Di Maria at Old Trafford. Getty
Louis van Gaal manager of Manchester United reacts during the Barclays Premier League match between Manchester City and Manchester United at Etihad Stadium. Getty
Louis van Gaal Manager of Manchester United watches training alongside Jos van Dijk, Coach of Manchester United during a training session ahead of the UEFA Europa League round of 16 second leg. Getty
Louis van Gaal (L) Manager of Manchester United scratches his head while Ryan Giggs (C) assistant manager looks on during the UEFA Europa League round of 32 first leg match between FC Midtjylland and Manchester United. Getty)
Louis van Gaal manager of Manchester United and players look on during a foggy Manchester United training session on the eve of the UEFA Champions League Group B match against CSKA Moscow. Getty
Louis van Gaal appears at a press conference with Sir Bobby Charlton as he is unveiled as the new Manchester United manager at Old Trafford on July 17, 2014 in Manchester. Getty
Head coach of Bayern Louis van Gaal and head coach of Manchester United Sir Alex Ferguson attend the press conference during the Audi Cup 2009 . Getty