Juan Carlos Paredes has joined the list of Watford players away on international duty this week.
Having impressed during the World Cup, the wing-back has been included in the Ecuador squad to face Bolivia in Fort Lauderdale, Florida, on Saturday.
The first Hornets players who could be international action are Daniel Pudil and Matej Vydra, as the Czech Republic are due to face USA in a friendly tonight, before they open up their Euro 2016 qualifying campaign against Netherlands on Wednesday, September 9.
Gabriel Tamas has been recalled to the Romanian international squad and they start their European qualification against Greece on Sunday, the same day as Ikechi Anya will be hoping to be involved for Scotland when they take on world champions Germany, while Daniel Tozser could come up against club-mate Craig Cathcart when Hungary meet Northern Ireland.
Lloyd Doyley is in the Jamaica squad for their friendly against Canada on Monday, while in the younger age groups Jonathan Bond is on England Under-21 duty, Tommie Hoban is with Republic of Ireland Under-21s and Josh Doherty is in the Northern Ireland Under-19 squad.