It means he will not follow in the footsteps of his father Gianluigi, who was part of the Italy side that won the 2006 World Cup in Germany.
Buffon Sr played a major part in that success as part of a stellar 28-year professional career which saw him win 176 senior international caps, 10 Serie A titles with Juventus, as well as Ligue 1 with Paris St-Germain and the 1999 Uefa Cup at Parma.
But his son added: “My mum was naturally very happy but my dad was excited too because it was my first national team call-up. He also advised me to play for the Czech Republic, because it’s the best way I can evolve as a player.”
Louis was first called up by the Czech Under-18s for a training camp in February, sparking worldwide media interest.
“Honestly, I didn’t expect that, but I have grown up under a microscope with my parents since I was a child and I hope they have taught me what to do and say,” he said.
Louis would also not have a problem if he eventually played against Italy as he added: “I was born and grew up in Italy, but I think that to be a 100% professional and do my job as best I can, I have to see each game as important, whether against Italy or another national team.”