Xabi Alonso believes Franco Mastantuono has the Real Madrid "gene" as the manager waxed lyrical about the 18-year-old's bright start since his summer transfer from River Plate. Madrid’s swoop for Mastantuono had been in the works for months. They agreed a deal but had to bide their time until the wonderkid turned 18. Once the birthday candles were blown out, the six-year contract was sealed, tying him to the Bernabeu until 2031.