Internacional's president Giovanni Luigi claims Oscar's proposed move to Chelsea is in a 'very advanced' stage but is yet to be finalised.
The president said on Sunday the two clubs had reached a verbal agreement over the transfer of the highly-rated Brazil international, who is currently in London preparing for the Olympics.
Reports in Brazil suggest Luigi wants the deal wrapped up by Friday and he revealed on Monday the move is getting closer.
He told Terra: "The situation is very advanced, but not finalised yet.
"Oscar has to get his work permit. He needs to have a certain amount of caps to play in England, but I don't believe that will be a problem."
Luigi refused to confirm Oscar's transfer fee but said the midfielder's former club Sao Paulo would receive a percentage.
He added: "I won't confirm the value, but I can guarantee it wasn't in pounds. No cross-border negotiation is made in pounds - it's either Euros or dollars.
"I have also reached an agreement with Sao Paulo over their part. It's Chelsea that will pay that, not Internacional."