Didier Drogba may miss the start of the season after undergoing a groin operation. He is estimated to return to full training in three weeks.

Chelsea are also missing new signing Benayoun, goalkeepr Petr Cech, and defender Alex to injury. They are all doubts for their season opener against West Brom.

http://news.bbc.co.uk/sport2/hi/foot...ea/8851598.stm