Watford travel to southeast London on Wednesday where they will face the Championship’s bottom-club Millwall.
Lions? newly-appointed boss David Tuttle, the youngest in the Championship, has both Paul Robinson and Matt Lawrence unavailable. Central defender Robinson is suspended for being sent-off against Leicester on Boxing Day while full-back Lawrence is serving the final game of his three-match ban. Defender Tony Craig, who returns from a one-match suspension, is available for selection.
Darius Henderson, who scored in the 3-0 defeat of Southampton on Boxing Day, looks set to keep his place in the starting line-up playing alongside Marlon King.
Hornets? boss Aidy Boothroyd has a vitually fully-fit squad to select from with Dom Blizzard (virus) being the only exception. Watford are expected to remain unchanged from the side that beat George Burley?s Southampton.
The Lions last played host to Watford in September 2004 with the Hornets running-out 2-0 winners thanks to goals form Heidar Helguson and Danny Webber.
Crystal Palace (h) 31 December
Luton (a) 2 January