Dee ihe na-aga n'ihu maka paragraf a - Mgbe ọ na-anọchite anya Czech Republic n'ọtụtụ ndị na-eto eto, Souček mere egwuregwu mbụ ya maka ndị okenye na 15 Nọvemba 2016 na egwuregwu enyi na enyi megide Denmark. O mere asọmpi mbụ ya na 10 June 2017, na Czech Republic 1<unk>1 pụọ draw megide Norway na 2018 World Cup qualifier. Souček pụtara n'egwuregwu atọ nke Czech Republic n'okpuru afọ 21 na 2017 UEFA Under-21 Championship.