Manchester United will not hold David de Gea against his will this summer.Real Madrid see the Spaniard as Iker Casillas' successor.

The Telegraph says United are genuinely concerned there is little more they can do to try and persuade De Gea to stay.

The club accept that the 24-year-old is a "Madrid boy", as one club source put it, and the pull to return to Spain might just prove irresistible for the goalkeeper who was signed from Atlético Madrid for £18.3million in June 2011. "David loves the club [United] but he has personal ties there [Madrid]," the source said.