Hull have succeeded in obtaining a work permit for American international striker Jozy Altidore.
The 19-year-old agreed last week to join the Tigers from Spanish side Villarreal on a season-long loan deal.
"Jozy is unproven at this level but has great potential," said Hull boss Phil Brown, who has the option of making the deal permanent at the season's end.
The Tigers have also completed the signing of Stoke City's Nigerian midfielder Seyi Olofinjana for £3m.
Altidore first revealed his move to Hull on his Twitter page on Wednesday, writing: "First match is against Chelsea, subject to a work permit *wink* *wink*. Thanks for the support and love - keep it coming."
The 19-year-old has limited experience in top-flight club football, but was impressive as the United States reached the final of the Confederations Cup in South Africa in June.
He will play for the US in a World Cup qualifier against Mexico on Wednesday before arriving in Hull later this week ahead of their opening Premier League match against Chelsea on Saturday.
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