Chelsea have completed the signing of Brazil playmaker Oscar from Internacional.

The 20-year-old joins the European champions in a deal reported to be worth £25million. He is part of Brazil's squad for the Men's Olympic Football Tournament at London 2012 and played in the 2-0 warm-up victory over Team GB last Friday.

Oscar, full name Oscar dos Santos Emboaba Junior, is a product of the Sao Paulo youth set-up. He left the capital for Internacional in December 2010 and has played at every level of international football from U-15 to U-20.

His Brazil debut arrived in September last year when he came on as a substitute in a 0-0 draw with Argentina, and he has scored once in six caps. Capable of playing as an attacking midfielder or winger, he is viewed as one of his country's most exciting talents.