Crocked Chelsea defender Branislav Ivanovic facing race against time to be fit for West Ham clash

Chelsea defender Branislav Ivanovic is facing a race against time to be fit forthe Blues clash against West Ham on September 11 due to a back injury. Theversatile defender  has been ruled out of Serbia's EuropeanChampionship qualifiers against the Faeroe Islands and Slovenia becauseof the complaint.  Out: Branislav Ivanovic (centre) has suffered an injury blow Ivanovic claims he will miss the next twoto six weeks  - leaving him doubtful for the visit to Upton Park andthe Champions League opener in MSK Zilina four days later.  The Stamford Bridge star said: 'I came to Belgrade to see myteammates, but the back injury is such that I cannot train or play.'  Russia coach Dick Advocaat tells Premier League trio: You're rotting on the bench!Chelsea miss out on Martin Demichelis as defender vows to fight for Bayern Munich placeCarson and Upson back for England as Capello's defensive crisis bites