London, May 20 :

Chelsea manager Jose Mourinho has insisted that want-away duo Didier Drogba and William Gallas will not be allowed to quit the club until their contracts are up. But Mourinho added the Londoners are prepared to listen to offers for strikers Hernan Crespo, Eidur Gudjohnsen and Carlton Cole, as well as goalkeeper Lenny Pidgeley and England right-back Glen Johnson.

Ivory Coast international Drogba said he wanted to move because he no longer enjoyed playing in England after being labelled a ‘diver’ this season. French defender Gallas, who has a year left on his contract, is frustrated at not being able to play in his more usual centre-back position.

But their Portuguese boss said the pair were staying put and then suggested that, despite being bankrolled by Russian billionaire Roman Abramovich, Chelsea might fail with their bid to sign Ukranian Andriy Shevchenko from Italy’s AC Milan.

“Didier has two more years on his contract and he is one of the players I consider not negotiable — he is not for sale,” Mourinho said. “If he does not play with happiness, he does not play — it is the same with Gallas. I like Shevchenko but my feeling is Milan don’t want to sell him and they will keep him.”

Carlton Cole has seen his path into the first team blocked by the likes of Drogba and Crespo, the latter two combining effectively during what was Chelsea’s second successive Premiership title-winning campaign.