Diario de Noticias says The Viola are ready to make a move for the Brazilian in the January transfer window.
But Fiorentina will have to pay a €50million clause in his contract, in order to get him in January.
The 22-year-old recently signed a new contract that will keep him at Benfica until 2015.
Barcelona, Chelsea, Inter and Atletico Madrid have also been linked with the defender.
