Chelsea will be looking to continue to their recent resurgence when they visit Watford at Vicarage Road in the Premier League on Wednesday.
The Hornets have been in a difficult run of form of late, winning just once in their last five league outings, but they remain four points clear of the Blues in the league standings.
Quique Sanchez Flores' men, though, come into the game off the back of two successive wins, one in the league and more recently a win over Nottingham Forest in the FA Cup.
Newly-signed midfielder Mario Suarez is in line to make his debut after joining from Fiorentina, while the senior players rested against Forest will be recalled.
The Blues are unbeaten in their last nine games in all competitions and come into the game after two successive wins.
Guus Hiddink's men are down in 13th position in the league standings and could move as high as 11th should they win.
Kurt Zouma and Cezar Azpilicueta were unused substitutes in the weekend's FA Cup win over MK Dons, while Willian is a slight doubt with a foot injury.
The last meeting between the two sides ended in a 2-2 draw at Stamford Bridge back in December.