Internacional have said that if starlet Oscar is to leave the club then the deal must be the biggest in the Brazilian football history.

Chelsea are believed to be in pole position to sign the 20-year-old playmaker and Internacional chief Giovanni Luigi has admitted that the London club's offer is so far the closest to their valuation.

"I want the transfer of Oscar to be the biggest transfer deal ever in Brazilian football," Luigi told Radio Gaucha. "And the Chelsea offer isn't that far from that."

However, Luigi added that they would be more than happy to keep Oscar - just as they did when Tottenham Hotspur came in for striker Leandro Damiao last summer.

"Last year Tottenham made two offers for Leandro Damiao. We kept him and he was very important," he continued.

"He is Internacional's top scorer in Libertadores and Brazil's national team number nine."

Oscar has been capped six times by his country and will feature in the London Olympics after being selected for their squad.