Alvaro Morata should be fit for Chelsea’s Premier League trip to Watford on Boxing Day, but Andreas Christensen is still struggling with a hamstring injury.
Striker Morata has been struggling with a knee problem, but is back in full training and Blues boss Maurizio Sarri is hopeful he will be ready to take on the Hornets.
Provisional squad: Kepa, Caballero, Rudiger, Alonso, Fabregas, Jorginho, Kante, Barkley, Hazard, Pedro, Loftus-Cheek, Kovacic, Giroud, Zappacosta, Willian, Cahill, Christensen, Azpilicueta, Morata, Luiz, Emerson Palmieri, Ampadu, Hudson-Odoi.
Watford will have an unchanged squad.
Will Hughes (hip), Andre Gray (leg), Sebastian Prodl (knee) and Adalberto Penaranda (foot) remain sidelined for the Hornets.
Boss Javi Gracia must decide whether to rotate his squad or stick with the side which beat West Ham 2-0 on Saturday.
Provisional squad: Foster, Cathcart, Kiko, Holebas, Kabasele, Sema, Doucoure, Quina, Pereyra, Cleverley, Deeney, Success, Capoue, Gomes, Mariappa, Masina, Wilmot, Chalobah, Deulofeu, Okaka.