Watford cannot select striker Heidar Helguson under the terms of his loan move from QPR.
Lloyd Doyley and Will Buckley (both hamstring) remain doubtful, and Jay DeMerit could miss out with a knock.
MATCH PREVIEW
Despite Queens Park Rangers' defeat at home to Cardiff, results elsewhere over the weekend made the west London club mathematically safe from relegation.
But Watford remain in serious danger of slipping into League One. The Hornets are two points and two places above the drop zone, and were thrashed 4-1 at Leicester on Saturday.
Watford boss Malky Mackay, the Championship's youngest manager, has seen his side go 15 away matches without a win and knows ending that run would be a massive step towards safety.
And Neil Warnock, the division's oldest manager, knows he has work to do ahead of next season and a sizeable budget to do it with. In the meantime, the QPR boss wants to give a number of the club's youngsters a chance to impress.
MATCH FACTS
Head-to-head
• Since both these clubs were last in the top flight together, Watford have won eight of their 13 matches against QPR in the second tier.
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• Rangers have won only one of their last seven home games against the Hornets (3-1 in March 2005).
Queens Park Rangers
• QPR have won only one of their last nine matches, and only Watford and relegated Peterborough have a worse Championship record than them in 2010.
• The R's have kept only five clean sheets this season, and just two on home soil - fewer than any other team in the division.
• Lee Cook could face his former club and make his 200th league start.
Watford
• Watford have won only one of their last eight league games, and two of 14.
• Their run of 15 games without an away win (four draws and 11 defeats) is the longest such sequence in the Championship this season.
• The Hornets have not finished lower than 18th in the second tier since being promoted in 1998.
MOST RECENT MEETING
Watford 3-1 QPR (7 December 2009)
Watford scorers: Doyley 43, Cowie 56, Cleverley 90.
QPR scorer: Agyemang 33.
Source: BBC Sport
Source: BBC Sport