According to Sky Sports, the 24-year-old defender - who currently plies his trade with Vasco da Gama - is being watched by a host of top European clubs.
Serie 'A' giants AC Milan, and Ligue 1 leaders Paris Saint-Germain are both believed to be monitoring the player's situation, while Liverpool have also been mooted as admirers.
Red Devils boss Sir Alex Ferguson has been credited with a firm interest in bringing the Brazilian international to Old Trafford, and is rumoured to be considering a bid for his services when the transfer window reopens this summer.
However, Manchester United will face serious competition for Dede's signature, with Premier League rivals Chelsea also plotting an offer in an attempt to lure him to Stamford Bridge.
Both clubs are way back in the pecking order, though, with a clutch of Brazilian clubs ready to sign the Vasco star, presenting him with the opportunity to remain in his homeland until the 2014 World Cup.
Cruzeiro are said to be leading the transfer tussle for Dede, after the centre-back confirmed in an interview with Lancenet he has received an approached.
"It's concrete, there is an offer from Cruzeiro. But I don't know yet if I'll leave Vasco or not."