Chelsea will be forced to make at least one change to their starting line-up for Wednesday night's encounter with Reading, with David Luiz set to miss out through injury.
David Luiz, 25, revealed via social media website Twitter that he will miss the game with a sore knee, which will likely see Gary Cahill deputise.
The Brazilian tweeted: "Good morning #geezers! I'm a little bit sad today, because I can't play tonight, I have pain on my knee!''
Meanwhile, Luiz's central defensive partner John Terry has warned Chelsea cannot afford to underestimate Reading.
The former England captain believes that the Royals will make life difficult for the hosts but that, with Chelsea's new-look attacking unit, they will be able to overcome the expected resistance.
"We're certainly not underestimating Reading. Being at home, we obviously want to come away with three points, but we realise it will be tough," Terry told the club's official website. "Whether they come and play on the counter-attack, which they look to do quite a bit, or stay solid throughout, we'll be ready for both approaches.
"They will probably have looked at this game and thought if they can get a point they'll be delighted. In the past, teams have come and sat back and made it difficult for us, but the new boys [Hazard and Oscar] looked sharp at the weekend and hopefully they can give us that new dimension."