According to World Sports, Argentine young player Mastantono's annual salary at Real Madrid is 3.5 million euros. Compared with his compatriot Echeviri (900,000 euros), who joined Manchester City, his annual salary is much higher. It is worth mentioning that Argentine international Alvarez's annual salary at Atletico Madrid is 6.6 million euros.

On August 14, Mastantono will train with Real Madrid. The midfielder joined Real Madrid for a transfer fee of 63 million euros and signed a six-year contract. His outstanding performance in River Plate has made Real Madrid fans look forward to it.