William Troost-Ekong is expected to spend around two weeks on the sidelines after sustaining injury on international duty with Nigeria.
The centre-back returned back to England early after copping a hamstring injury in Nigeriaโs friendly against Algeria last week Friday.
Watford provided an update on Troost-Ekongโs fitness on their official website on Friday.
William Troost-Ekong was forced off the pitch with a hamstring injury whilst representing Nigeria last week, and is aiming for a mid-October return,โreads the statement.
The London club also provided an update on another Nigerian at the club, Tom Dele-Bashiru.
Dele-Bashiru has been sidelined since August but is nearing a return to action.
โHaving sustained a lateral collateral ligament injury in August, midfielder Tom Dele-Bashiruโs rehabilitation is going well, with the 23-year-old training individually outside,โ the club added.
The Hornets will face Stoke City in their first game under new manager Slaven Bilic at the Bet365 Stadium on Saturday.