The former Chelsea star is struggling with a thigh muscle that he suffered in the win over Cologne last month.
He told reporters: “I do not think I will be able to play. I have made some progress, I am feeling better right now, but I still have to overcome it.
“I had hoped I would be closer to fitness at this point in time, but I still need to fully recover.
“I do not think I will be ready for the fixture against Tottenham this week.”