Chelsea face some problems in terms of team selection at the moment, particularly in midfield, with Eden Hazard suspended, Romeu injured, Mikel and Moses at AFCON and David Luiz a doubt.
If Luiz doesn't make it, Lampard and Ramires will play in defensive midfield, with Ryan Bertrand likely to play on the left.
Demba Ba and Fernando Torres will be in direct competition to start up front, while John Terry is available again but this game may come too soon after Brentford.
Three wins and only 1 loss in their last 5 games have seen Reading jump above Wigan in the table and has given the Royals renewed belief that they can espace relegation this season, against all the odds.
In the last week, Chelsea crashed out of the Capital One Cup to Swansea and very nearly the FA Cup at the hands of Brentford, but for a late Fernando Torres equaliser.
Given Reading's recent form and Chelsea's potential absentees, this could be a great chance for the home team to provide an upset, Chelsea's class cannot be doubted, and the likes of Juan Mata should find holes to exploit in a hard-fought Chelsea win.
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