Watford are without Craig Cathcart, Tommie Hoban (both knee) and Kiko Femenia (thigh), while Troy Deeney continues to serve his ban, but the Hornets do welcome back Abdoulaye Doucoure and Marvin Zeegelaar from suspension.
Miguel Britos (foot) and Will Hughes (thigh) face late fitness tests.
For Leicester Daniel Amartey is suspended, after his red card against Manchester United, Robert Huth (knock) is doubtful and Danny Simpson is hopeful of shaking off a knock.
Did you know?
Leicester City have won four of their six Premier League matches against Watford (D1 L1), though only one of those wins came away from home (1-0 in March 2016).
Among current Premier League clubs, Watford have played the most matches on Boxing Day without recording a win (D2 L2).
Leicester have only won one of their 11 Premier League matches played on Boxing Day (D2 L8), losing each of the last three in a row.
Riyad Mahrez has scored in both of his Premier League appearances at Vicarage Road, both coming in 2016.
What the managers say
Marco Silva: "Now is the moment to react as a team. We need to find the solution."
Referee: Chris Kavanagh
Assistants: Lee Betts, Sian Massey-Ellis
Fourth official: Andre Marriner
