The 27-year-old will be able to leave Flamengo as there is a clause in his contract allowing him to leave on a free transfer in January if a European club makes a move for him, according to the Mirror.
Adriano is keen to return to Europe in order to boost his chances for a place in the Brazil World Cup squad.
Tottenham boss Harry Redknapp tracked Adriano, while the Brazilian was at Inter Milan.
Benfica and Atletico Madrid are also watching Adriano closely.
