[6][7] Nir'on gathered interest overseas, especially in Denmark, where he has a local passport through his family, and he impressed Lars Høgh, goalkeeping coach for Brøndby and Denmark, who recommended him for Nordsjælland, where he went for a two week trial as well as with the Danish national youth team.
[9] In July 2023, Nir'on secured a loan with an option to buy to Bosnian defending champions Zrinjski Mostar,[10] but he registered there only one appearance in which he conceded three goals and was recalled in January.
[12] He made his debut for the club on 24 February against Beitar Jerusalem, keeping a clean sheet in a 0–0 draw.
[22] In September 2021, Nir'on was called up for the Israel under-21 squad to play in the 2023 UEFA European Under-21 Championship qualifiers.
[30] Due to an injury to the team's goalkeeper Niv Eliasi, Nir'on started the first match of the Olympics group stage against Mali.
[31] The match ended in a 1–1 draw, and he received positive feedback after a strong performance including 5 saves.
[34] He also played in Israel's last match of the tournament against Japan, in which he made some great saves before conceding in injury time, leaving the scoreline at 1–0.
[35] Despite the team being eliminated in the group stage, Nir'on received positive comments and was lauded for the many saves he made during the tournament.