Chelsea will be without Germany international Andre Schurrle for an unidentified period of time after the attacker returned from international duty with a slight niggle.
Schurrle scored a hat-trick as Germany beat Sweden earlier in the week, but his success has come at a cost for Chelsea.
On Friday, the club's official Twitter account said:
Mourinho says Andre Schurrle has a slight niggle after returning from international duty and will be unavailable for selection. #CFC— Chelsea FC (@chelseafc) October 18, 2013