The 33-year-old has made 75 appearances for his country and remains a key figure in coach Marco van Basten´s plans ahead of this summer´s tournament.
When asked if there was a possibility he may retire from the national team following Euro 2008, he told Voetbal International: "I don´t know. I am 33 years old and if I continue it cannot be for one year. If I decide to remain then I will be making a commitment to the total route towards the 2010 World Cup in South Africa."
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