West Brom defenders Jonas Olsson and Steven Reid both suffered hamstring strains against Leicester on Saturday and could miss out.
Abdoulaye Meite and Joe Mattock are set to deputise in a reshuffled defence.
MATCH PREVIEW
West Brom could secure their second promotion to the Premier League in three seasons with victory at relegation-threatened Watford, whose own recent spell in the top flight must feel a long time ago.
The Hornets were a Premier League side as recently as 2007, but a sorry sequence of one win in 11 games has left them in grave danger of dropping into the third tier for the first time in 12 years.
Manager Malky Mackay was pleased with the performance in Saturday's draw at Preston and has urged his players to show similar character on Monday, knowing defeat could put them in the bottom three.
For Mackay's opposite number, Roberto Di Matteo, it is a question of when, and not if, his season's goal is achieved. Albion's promotion will be confirmed if they win and third-placed Nottingham Forest fail to beat Cardiff.
MATCH FACTS
Head-to-head
• West Brom won the reverse fixture 5-0 to take their unbeaten league record against Watford to 13 matches (W8, D5), dating back to March 1996.
• Watford did, though, beat Albion 1-0 at Vicarage Road in the FA Cup fourth round in January 2003.
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Watford
• Watford have won only one of their last 11 games and lost seven of the most recent 10.
• They have lost four, and drawn one, of their last six games at Vicarage Road.
• The Hornets are on the longest current run in the Championship without a clean sheet of 11 matches.
• John Eustace is hoping to make his 200th career league start.
West Brom
• The Baggies have won six and drawn one of their last seven since losing 3-1 at Queen's Park Rangers on 6 March.
• The 2-0 victory over Swansea on 16 March is Albion's only win in five away league games.
• Roberto Di Matteo's side are the top scorers in the Championship, and matches involving them in this division have generated the most goals; 124 (81 for, 43 against).
MOST RECENT MEETING
West Brom 5-0 Watford (31 October 2009)
West Brom scorers: Olsson 5, Dorrans (pen) 18, Moore 49, Zuiverloon 63, Cox 68.
Source: BBC Sport
Source: BBC Sport