Manchester City have reported no injury concerns following their defeat at Leicester City, though Vincent Kompany (knee) remains out and Sergio Aguero and Fernandinho are both suspended.
Walter Mazzarri says a number of his Watford players will be assessed, but Roberto Pereyra is definitely available after suspension.
Younes Kaboul is back in training and could return and Valon Behrami is recovering from illness. Craig Cathcart (groin) is still expected to miss out and loan signing Kenedy has been sent back to Chelsea.
Did you know?
Manchester City are unbeaten in four previous Premier League matches against Watford, winning both fixtures last season (W2 D2 L0).
All seven of the previous goals scored in this fixture in the Premier League have arrived after half-time.
Watford have never won a Premier League match on a Wednesday (W0 D2 L7).
Man City have won only three of their seven Premier League home matches this season (W3 D3 L1). They have won double this number away from home (six).
What the managers say
Pep Guardiola: "We need to minimise the mistakes to win the games. But I believe in the way I like to play."
See: Guardiola: I won't change my philosophy
Walter Mazzarri: “I saw the game against Leicester. We will find Manchester City very angry and concentrated, we won't have the luck that they will underestimate us.”