Chelsea boss Luiz Felipe Scolari admits Nicolas Anelka and Didier Drogba are struggling to play together.

"It has been good sometimes but not good at other times," said Scolari, reflecting on the work he has done on the training pitch with the two men playing together. "It's 50-50. But this period has been better for the group. They are trying more than before to understand what positions I want them to be in. It has improved and evolved more in the last 15 days.

"They know more now. They have more confidence than before if they change (the formation) during the game."