Louis van Gaal said: "It was always a wish for me to work in the Premier League. To work as a manager for Manchester United, the biggest club in the world, makes me very proud. I have managed in games at Old Trafford before and know what an incredible arena Old Trafford is and how passionate and knowledgeable the fans are. This club has big ambitions; I too have big ambitions. Together I'm sure we will make history."
Joel Glazer said: "I am delighted that Louis will be our next manager. He has an outstanding pedigree as a coach, both as a man who motivates his teams to win trophies and as someone who believes in giving young players a chance to prove their worth. I am sure he will make a big impression on the club, the players and the fans."
Avie Glazer said: "Louis joins us at an exciting time and has already communicated some great ideas for how the club can move forward. The board is right behind him in his plans and everyone here is already looking forward to the start of next season.
Ryan Giggs said: "I am thrilled to have the chance to serve as assistant manager. Louis van Gaal is a world-class coach and I know I will learn a lot about coaching from being able to observe and contribute at such close quarters. Manchester United has been a huge part of my life and I'm delighted to be able to continue that relationship in such a key role."
Frans Hoek is the Netherlands' goalkeeping coach and has been instrumental in the development of keepers such as United legend Edwin van der Sar and Barcelona's Victor Valdes. He joins as assistant coach, specialising in goalkeeping.
Marcel Bout joins as assistant coach, specialising in opposition scouting, having previously worked for Bayern Munich, Telstar, AZ, FC Volendam and Feyenoord.