Ronie's brother and agent Roberto de Assis has revealed talks have been held with Rovers about a shock move to Ewood Park.
De Assis said: "Blackburn have contacted us. There is also other interest in England but this is confidential."
Brazilian side Gremio also appear keen to sign the 30-year-old, although they were initially thought to be confident of securing their former player on a free transfer which no longer seems to be the case.
"If we do not reach an agreement with a club in Brazil then he will return to Milan as he is still a Milan player. We are not ruling anything out."