Arsenal go into this match on the back of four straight Premier League victories while fourth-placed Watford are searching for their first win in three.
Team news
Arsenal defender Sokratis (dead leg) is now available for selection but Emile Smith Rowe (hip) is a doubt.
Ainsley Maitland-Niles (fibula), Dinos Mavropanos (groin) and Laurent Koscielny (Achilles) remain out.
Watford defender Christian Kabasele will be able to play as the red card he received during Wednesday's Carabao Cup tie against Tottenham Hotspur has been rescinded.
Did you know?
Arsenal have won eight of their 10 PL meetings with Watford but those two defeats have come in the last three meetings.
Watford have picked up three victories in their last six matches against Arsenal in all competitions.
Arsenal's last home PL defeat in a match kicking off at 15:00 on a Saturday was on the opening day of the 2013/14 season when they lost to Aston Villa.
Alexandre Lacazette has scored in each of his last four home starts in the Premier League, netting five goals in total. The last player to score in five successive starts at Emirates Stadium for Arsenal was Robin van Persie in 2011/12.
Referee: Anthony Taylor
Assistants: Gary Beswick, Neil Davies
Fourth official: Martin Atkinson
