The Dutch giant was at Old Trafford recently and took time to discuss De Gea's remarkable form at Manchester United, which has yielded four Sir Matt Busby Player-of-the-Year awards in the last five years.

Ahead of the Spaniard's first-ever appearance at a World Cup finals, when a Spain side still coming to terms with the shock dismissal of coach Julen Lopetegui on the eve of the tournament faces Cristiano Ronaldo and Portugal in Sochi, all eyes will be on United's brilliant keeper.

Van der Sar knows more than a thing or two about the art of keeping goal, and the 130-times capped Netherlands international has been paying close attention to the 27-year-old's performances and was happy to offer some advice.