The 24-year-old Brazilian centre-back is attracting interest from numerous top European clubs, including Juventus, Liverpool Valencia, Manchester United and Benfica but is mostly strongly being linked with Milan.
"Vasco are awaiting Milan’s offer," his agent Giuliano Aranda told TMW.
"I believe there has been contact between the clubs and the Rossoneri’s interest in Dede is concrete, but at the moment they have not spoken to me directly. Milan need to reach an agreement with Vasco before negotiating with us."
It is reported the Brazilian club has set a €12m price-tag on the 24-year-old defender.
"Many European clubs are tracking him and I can also reveal there have been talks with some Russian clubs.
"The latest contact with Valencia was six months ago, while Liverpool are on the same level as Milan – that is there is interest from the Reds, but no talks between me and the English club."
The representative was asked whether Dede would have a preference between Italy, Spain, England and Russia.
"At the moment Dede is not thinking about a transfer. He is happy in Brazil and giving his all to earn a call-up for the Confederations Cup.
"Milan are certainly a fantastic club and among the top sides in the world, so playing with the Rossoneri jersey would be an honour for the lad."
/YahooSport/