Chelsea legend Marcel Desailly believes his old club must build a British core.
Desailly believes that there should be a nucleus of homeland players at a club.
He said: "When I was at Milan, having Italian players at the club kept the identity of the club.
"Manchester United have it and Chelsea should have it as well. It is a big blow if Cole and Lampard go. You lose a bit of the history of the club. Chelsea have some English youngsters like Ryan Bertrand.