Chelsea v Peterborough: Zouma, Terry and Batshuayi play
Kurt Zouma makes his first-team comeback in the FA Cup tie at Stamford Bridge, where John Terry also returns to the Chelsea side.
Zouma, fit again after a long-term knee injury, gets the chance to impress, as does summer signing Michy Batshuayi.
There are also starting places for Branislav Ivanovic, Nathaniel Chalobah and Ruben Loftus-Cheek, while youngster Ola Aina is among the Blues substitutes and could feature at some stage.
Chelsea: Begovic, Zouma, Terry (c), Cahill, Ivanovic, Fabregas, Chalobah, Loftus-Cheek, Pedro, Batshuayi, Willian.
Subs: Eduardo, Azpilicueta, Aina, Kante, Moses, Hazard, Costa.
Peterborough: McGhee, Smith, Hughes, Bostwick, Tafazolli, Edwards, Forrester, Angol, Maddison, Lopes, Nichols.
Subs: Tyler, Taylor, Ball, Inman, Binnom-Williams, Chettle, Samuelson.