straight to your inbox every day for freeDimitar Berbatov says Sergio Ramos could be a Thiago Silva-like signing for Manchester United.Silva has impressed in the Premier League after joining Chelsea in the summer following his release from PSG, acting as an experienced head in the Blues' defence.Meanwhile, there are once again question marks over Ramos' future at Real Madrid, with the 34-year-old's contract at the La Liga champions set to expire at the end of the season.United have been