Daniel Pudil has been named in the Czech Republic squad for their friendly against Finland on May 21.
The wing-back was one of three players given time off by the Hornets last week ahead of anticipated selections for their countries.
Pudil won his first cap in just under two years when he was introduced as a substitute against Norway in March. He has made a total of 23 appearances for his country.
Former Hornet Matej Vydra, who Watford are hoping to re-sign next season, is also included in the squad.
Czech Republic squad
Goalkeepers: Marek Štěch (Yeovil Town), Tomáš Vaclík (Sparta Prague)
Defenders: Daniel Pudil (Watford), Pavel Kadeřábek (Sparta Prague), Michal Kadlec (Fenerbahce), David Limberský (Viktoria Plzeň), Václav Procházka (Viktoria Plzeň),
Marek Suchý (Basel)
Midfielders: Vladimír Darida (Freiburg), Bořek Dočkal (Sparta Prague), Josef Hušbauer (Sparta Prague), Tomáš Hořava (Viktoria Plzeň), Ladislav Krejčí (Sparta Prague), Tomáš Rosický (Arsenal)
Lukáš Vácha (Sparta Prague), Ondřej Vaněk (Kayserispor)
Strikers: Václav Kadlec (Eintracht Frankfurt), Matěj Vydra (Udinese, on loan at West Bromwich Albion)