Mastantuono had been linked with Madrid since 2023, but the deal never progressed until PSG entered the race and became the favourites to snap him up this summer. However, the River Plate superstar will now join Los Blancos, who are set to fork out a €40 million ($45m/£34m) fee. The amount will be paid in installments, according to Romano. Although the deal has been agreed, the move is yet to be officially announced by either club. River Plate will first request that Madrid allow them to keep Mastantuono for the Club World Cup. If that happens, the 17-year-old will arrive at the Santiago Bernabeu in August.