
Xabi Alonso played a direct role in Franco Mastantuono’s transfer from River Plate to Real Madrid.
After a lackluster 2024–25 campaign that ended without a major trophy, Real Madrid turned to the transfer market to bolster their team under new boss Alonso. The club signed three defensive reinforcements in Trent Alexander-Arnold, Dean Huijsen and Álvaro Carreras, and also locked down 17-year-old Mastantuono.