AC Milan are willing to let Ronaldinho go for as little as Stg6.8million.
The 30-year-old Brazilian has only six months of his contract remaining at the San Siro, with Gremio reportedly keen to bring him back to his home country, at the club where he started his career.
The South Americans had hoped to secure the star on a free transfer in January but Milan vice-president Adriano Galliani says he will not be leaving unless the Serie A club's valuation is met.
"Whoever wants Ronaldinho has to pay eight million euros," said Galliani after meeting with the player's agent.