The 16-year-old stole the show at the recent tournament in Mexico by finishing top scorer with nine goals in four games for the Ivory Coast.
Golden boot: Coulibaly was top scorer at the Under 17 World Cup
His tally included a hat-trick against Brazil and four against Denmark as he equalled former Liverpool striker Florent Sinama Pongolle's record from ten years ago in three fewer games.
The striker has been dubbed the new Didier Drogba and was reportedly being tracked by Real Madrid.
Coulibaly joins from newly promoted Serie A side Siena, where he failed to make a first team appearance.
He joins goalkeeper Brad Friedel and fellow youngster Cristian Ceballos in moving to White Hart Lane this summer.
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Source: Daily Mail
Source: Daily Mail