The 31-year-old's contract with Pep Guardiola's side is set to expire at the end of the season, and he is expected to leave the club as a free agent.
According to reports, both Juventus and AC Milan are interested in signing Silva, but may struggle to match his reported wages of €10 million per year.
Despite this, the two Italian clubs are holding exploratory talks with Mendes in an attempt to secure a deal.
Silva has also received interest from other clubs, including a reported offer from Saudi Arabia and former club Benfica.
