Gremio are convinced they can bring back their former star.
But Roberto de Assis declared: "There is a lot of money to go before Gremio can finalise this move. A lot of money.
"Other clubs, however, have already reached the necessary sum.
"Who are the other clubs? In your view, what am I doing in Rio de Janeiro?"
De Assis added: "There are still many things to resolve, first of all the outstanding issues with Milan. There's no point saying if anyone is in the lead, as I am an agent and we all need to be very calm during these negotiations.
"I don't think the matter will be resolved before Wednesday. In any case, tomorrow we will be in Porto Alegre."