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Last year's winners started off a dominant force, but in the last couple of months form has dropped considerably. Games they should have won have been drawn or even lost.
Some star players have been out through injury, but even the fit members of the team have lost form and confidence. The loss of both senior centre backs Terry and Alex simultaneously had a profound impact on performances, the void could not be filled.
During the summer Chelsea made only a select few signings, Ramires being the most prominent. So far he has been rather disappointing. Losing Ricardo Carvalho had more of an impact than they first realised. It was a big mistake not to sign a capable replacement and Ancelotti will have to do so in January.
Many key players of the past are no longer as young and fit as they once were. The likes of Lampard, Anelka and Drogba are well into their 30s and will have to be replaced sooner rather than later.
To add to the saga, the question of Ancelotti's job security will always be an issue at a club such as Chelsea during such periods of poor form.
Chelsea's wish list:
Centre back replacement for Carvalho
A younger goalscoring striker