Chelsea are aiming to make the FA Cup fifth round
Asmir Begovic makes a rare start ahead of Thibaut Courtois.
John Terry returns after his dismissal against Peterborough in the last round with Kurt Zouma paired alongside him in defence.
Nathan Ake makes his first start since returning from his loan spell at Bournemouth.
Young duo Nathaniel Chalobah and Ruben Loftus-Cheek also make the cut.
And there is no place for Diego Costa, with Michy Batshuayi given a rare chance to impress in his place.
In-demand Chelsea duo train ahead of the Blues' FA Cup clash with Brentford
Fri, January 27, 2017
Asmir Begovic and Branislav Ivanovic were both in Chelsea training today despite potential moves away from Stamford Bridge in the next few days
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Chelsea train ahead of their FA Cup Fourth Round clash with Brentford
Michy Batshuayi starts for Chelsea
Brentford make just one change from the side that lost 2-1 to Wigan last week.
Striker Yoann Barbet has been picked to lead the one ahead of Tom Field.
However, former Chelsea midfielder Josh McEachran starts against his former club.
Josh McEachran was once on Chelsea's books
Chelsea: Begovic; Zouma, Terry (c), Azpilicueta; Pedro, Chalobah, Fabregas, Ake; Willian, Batshuayi, Loftus-Cheek.
Subs: Eduardo, Ivanovic, Moses, Matic, Kenedy, Hazard, Diego Costa
Brentford: Bentley, Colin, Bjelland, Dean, Yennaris, McEachran, Egan, Woods, Sawyers, Vibe, Barbet
Subs: Bonham, Hogan, Hofmann, Kerschbaumer, Clarke, Jota, Field