Real Madrid are preparing an offer for Manchester United captain Nemanja Vidic. The People says Real are believed to be preparing a shock £10million summer swoop for Vidic.

And that could plunge Sir Alex Ferguson into a major defensive crisis - with the United boss believed to be ready to listen to offers for Rio Ferdinand.

Sources in Madrid say Vidic, 30, tops Jose Mourinho's summer wish list - but losing the former Serbia star is not on the agenda for Ferguson.