Arsenal have signed French youth international striker Yaya Sanogo on a long-term contract, the London club said on their website (www.arsenal.com) on Monday.
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Sanogo, 20, a free agent after leaving Ligue 2 team Auxerre, has represented his country at Under-16, Under-17 and Under-19 level and is currently with the national side in Turkey for the Under-20 World Cup.
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He has scored in two of their three matches in Turkey, helping France qualify for the knockout phase.
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Sanogo had been with Auxerre since the age of 14.
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He made 24 first team appearances and scored 11 goals.