Brazil midfielder Oscar has undertaken a medical with Chelsea whilst in England, but insists he has not yet signed a contract with the Champions League winners.

Oscar, 20, played in Brazil's 2-0 victory over Great Britain in Middlesbrough on Friday evening as the teams warm-up for the London 2012 Games.

The Internacional playmaker has been linked with a £25 million move to Stamford Bridge, but is adamant he will decide his future after his national team duties have been completed.
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