Carvalho sidelined with knee problem

Ricardo Carvalho’s knee injury could rule him out for up to a month of Chelsea’s Barclays Premier League title challenge.

The 30-year-old suffered medial collateral ligament damage during the 1-1 draw with Manchester United yesterday and he was taken off in the 12th minute of the clash at Stamford Bridge, with medical staff estimating the problem will lead to between three and four weeks on the sidelines.