Andreas Christensen will play just his second game for Chelsea after Jose Mourinho made nine changes to the team that drew with Liverpool earlier this week.
Christensen's only first-team game came in the 2-1 win at Shrewsbury Town in the Capital One Cup back in October. The 18-year-old Dane will start at right-back.
Elsewhere, Petr Cech returns in goal, while Gary Cahill and John Obi Mikel are the only players who retain their place from the match at Anfield.
Kurt Zouma replaces John Terry, leaving Didier Drogba to captain the side. Loic Remy will likely play from the right wing with Andre Schurrle left out of the squad completely - perhaps a hint that the German could leave the club.
Teenagers Nathan Ake and Ruben Loftus-Cheek are on the bench, as are Cesc Fabregas, Willian and Eden Hazard, should things go wrong.
Chelsea: Cech, Christensen, Zouma, Cahill, Azpilicueta, Ramires, Mikel, Remy, Oscar, Salah, Drogba.
Subs: Courtois, Terry, Ake, Fabregas, Loftus-Cheek, Willian, Hazard.
Bradford City: Williams, Darby, McArdle, Davies, Meredith, Liddle, Morais, Halliday, Knott, Hanson, Stead.
Subs: Urwin, Sheehan, Clarke, Zoko, Yeates, Kennedy, Routis.
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