Memphis Depay
Depay says Louis van Gaal heavily influenced the move to United. Getty Images

Manchester United have confirmed the signing of Memphis Depay on a four-year deal from PSV Eindhoven.

The Netherlands international has the option to extend his deal by a further year after moving for an undisclosed fee to become the club's first signing of the summer transfer window.

Depay played under United boss Louis van Gaal for the Dutch national team and the 21-year-old has reiterated the influence the coach had in his move to Old Trafford

"[Van Gaal was] very important," he told the club's official website. "He gave me the opportunity to play at the World Cup, he showed a lot of confidence in me and I think he's the best trainer in the world.

"He makes me better on the training ground and that's very important for me. So I'm very much looking forward to working with him here.

"I think it'll be a little bit easier [with the Dutch influence at the club. I can ask the guys [Robin van Persie and Daley Blind] what happens around the club but also my own feelings will give me a sense.

"I need to see everything, I need to improve, I need to see the stadium. I think it will have a big impact on me because I'm young and this is a very big club with many great supporters. I'm very happy."

Depay hopes to become the latest in a glittering list of wide players to play for United and follow in the footsteps of both Cristiano Ronaldo and Ryan Giggs.

"I'm going to let my feet speak," he added. "I hope I can develop here in the Premier League and I hope I can be like those great legends [Ronaldo and Giggs] one time in my career. I'm going to work hard, so let's see. I believe I can be a great player for Manchester United.