Mastantuono, who has been dubbed the "Argentine Phil Foden," has made a strong impression with his performances for River Plate. At just 17 years old, he has already made history by becoming the youngest scorer in the club's history, netting a goal in an Argentine Cup match against Excursionistas in February 2024.

The young midfielder is considered one of Argentina's most promising talents, and his skills as a playmaker have drawn comparisons to former academy graduates like Ariel Ortega, Radamel Falcao, Julian Alvarez, and Enzo Fernandes.

Mastantuono is expected to be included in Argentina's squad for the 2026 World Cup, which would further increase his profile. With Real Madrid no longer in the running, Manchester United may now consider making an offer for the talented young player.

Manchester United's manager, Ruben Amorim, is already looking at other signings, including Ipswich Town forward Liam Delap, as the club prepares for a busy summer of transfers.