New Chelsea boss Carlo Ancelotti says Andriy Shevchenko is the best striker he's ever worked with - but it is time for the Ukraine veteran to move on.

"He is the best striker I have worked with because he scored so many goals," said Ancelotti. "But he had a major back problem two years ago at Chelsea and he had it for some months.

"Now he is working very well but, with so many strikers here, it's difficult to find a place for him."