Career
Upamecano is a product of the youth team of Valenciennes Football Club and after attracting the attention of a number of major European clubs, including Manchester United, he joined Red Bulletin Salzburg in July 2015 for a reported fee of €2.2 million. He was an unused substitute in Red Bulletin"s Union of European Football Associations Champions League game against Malmö FF on 29 July 2015. Upamecano played for the France under-16 team that finished third in the 2014 Aegean Cup.
He played in three of his country"s four games and was named the competition"s best defender.
He subsequently moved up to the France under-17 squad, making his debut in a European Championship qualifier against Cyprus on 27 October 2014. He made his debut for France under-18 in a 0–0 friendly draw with United States under-18 on 4 September 2015.