Chelsea boss Luis Felipe Scolari has admitted that he is worried by the Premier League club's growing injury list.

Leading striker Didier Drogba was stretchered off with suspected knee ligament damage during the west London outfit's Champions League clash with Cluj on Wednesday.

The Blues were already missing key players Deco, Joe Cole, Michael Essien and Ricardo Carvalho, while Ashley Cole was a late withdrawal with a sore back. To add to Scolari's woes, John Terry both finished the game in Romania.

"I know nothing about Didier," Scolari told Chelsea's official website.

"All I know is that he has a problem and cannot move. Ashley felt his back before Tuesday and it was impossible for him to play. He will be ready for Sunday though," the former Brazil head honcho added.

An extended lay-off for Drogba, who was making only his third start after undergoing a knee operation in the summer, would leave Nicolas Anelka as Chelsea's only fit recognised forward for the game with Aston Villa at the weekend.

"I have a few days to build the team again," Scolari continued.

"One player is better than another for the game on Sunday. I don't know now what the possibilities I have for Sunday are.

"Maybe after Thursday I will have a chance to say something more."