Leicester City are seeking to extend a four-match unbeaten run, while Watford head coach Javi Gracia is aiming to halt a three-match winless sequence after signing a new deal.
Leicester midfielder Vicente Iborra has been passed fit although Harry Maguire (knee), Rachid Ghezzal (leg) and Matty James (Achilles) are still out.
James Maddison returns to the squad following suspension.
Watford's Jose Holebas has recovered from a calf injury.
Adalberto Penaranda is still not fit to play, while Daryl Janmaat and Tom Cleverley are also deemed not yet match-fit.
Leicester have won all four of their Premier League home matches against Watford, scoring eight goals and conceding only one.
The Foxes have conceded a league-high 65 per cent of their Premier League goals in the first half of matches this season, with 11 out of 17, and five of those have come in the opening 15 minutes.
Watford are looking for a second clean sheet in 13 PL away matches, with their last one coming in October’s 2-0 win at Wolves.
The Hornets are also targeting their second victory in 14 December PL away matches, with their last win on the road in this month coming at Sunderland in 2015.
Referee: Graham Scott
Assistants: Marc Perry, Neil Davies
Fourth official: Craig Pawson