Fans of Ajax celebrate after their 32th Dutch league match against Willem II in Amsterdam, capital of the Netherlands, on May 5, 2013. Ajax won 5-0 and claimed the champion in advance. (Xinhua/Robin Utrecht)

Players of Ajax celebrate after their 32th Dutch league match against Willem II in Amsterdam, capital of the Netherlands, on May 5, 2013. Ajax won 5-0 and claimed the champion in advance. (Xinhua/Robin Utrecht)

Players of Ajax celebrate after their 32th Dutch league match against Willem II in Amsterdam, capital of the Netherlands, on May 5, 2013. Ajax won 5-0 and claimed the champion in advance. (Xinhua/Robin Utrecht)

Players of Ajax celebrate after their 32th Dutch league match against Willem II in Amsterdam, capital of the Netherlands, on May 5, 2013. Ajax won 5-0 and claimed the champion in advance. (Xinhua/Robin Utrecht)