José Mourinho began the process of reshaping his Chelsea squad for next season when David Luiz agreed terms with Barcelona yesterday over a move likely to be worth almost £30 million after the World Cup finals.

There is a desire from both clubs and the player for the deal to happen, but it is likely to be subject to the approval of the next coach at the Catalan club. Gerardo Martino could depart ­Barcelona, to be replaced by Luis Enrique, even if he lifts the Spanish title by beating Atlético Madrid in a winner-takes-all match on Sunday.

The sale of Luiz will allow Chelsea to complete a deal for Diego Costa to answer their striking problems. Chelsea have met the £32 million release clause but