The 21-year-old enjoyed a great 2014/15 campaign for PSV, where he topped the Eredivisie scoring charts with 22 goals prior to his transfer and helped his side win the Dutch league title.
De Boer feels that Depay has all the requisite talent to be a successful player at Manchester United, and he is confident Louis van Gaal is the right man to move his game forward.
“I think Depay needs that kind of coach,” he told Omnisport.
“He has a great mentality but still he is very young and has to know what he has to do to stay on that level or even get better – I think Van Gaal is the right person for that.