Celebrity impersonator Andre Silva said: "He replied to everyone, smiling and secure, 'I will go to Milan'."
The party raged on until dawn on Tuesday.
Meanwhile, it's emerged Ronaldinho's move to AC Milan will hit his bank balance - hard.
AS says as part of Ronie's £2 million-a-year deal with Nike contains a clause which states if he moves to a non-Nike club he will only receive £350,000-a-year from the American sportswear giants.