By Manchester correspondent Alex Stevens 

Manchester United are targeting a move for Sergio Ramos, Football Insider sources understand.

United have registered their interest in the Real Madrid defender after learning he could leave the Bernabeu this summer.

The Premier League club have discussed Ramos with the Spanish giants during talks about the proposed transfer of David de Gea to Madrid.

United accept that the departure of De Gea to Real is inevitable but want a leading player from the Spanish club in return.

Sources have told Football Insider that United do not necessarily regard Ramos as part-exchange for De Gea and the likelihood is that they would be separate deals.

However, there is a growing sense that Ramos could be enticed from the Bernabeu in what would be one of the most sensational deals of the summer.

There are understood to be growing tensions between the 29-year-old defender and Real over his future. Ramos, who has been at Real for 10 seasons and is the vice-captain, has just two years remaining on his contract and talks about an extension have stalled.

United have made De Gea a string of offers in an attempt to tie him down to a deal that extends his contract beyond the summer of 2016, with the latest believed to be worth a basic £220,000-a-week plus top-up bonuses.

But the goalkeeper is believed to have his heart set on a move to Real, where he is expected to replace Iker Casillas as the club’s No1.