Paz was hailed as one of the best prospect in La Fabrica, Real Madrid's youth academy, having joined them in 2016 as an 11-year-old. He made eight appearances for the first team in the 2023-24, before being sold to newly promoted Serie A side Como on a four-year deal, albeit with a buy-back clause in place.
Lionel Scaloni, the Argentina head coach, handed Paz his international debut in October against Bolivia in a 2026 World Cup qualifier match, where he assisted Messi. Following the game, the eight-time Ballon d'Or winner heaped praise on the 20-year-old.
"Now Nico Paz has made his debut, and he has a lot of quality and I hope he continues to grow," Messi said after beating Bolivia 6-0. "He wasn't born when I made my debut in Primera, yes, I knew (laughs). He has a great head, he understands the game perfectly and I hope he continues like this. He played, he enjoyed it and I think he'll feel comfortable in this team because he likes having the ball."