Overview

• Real Madrid registered Mastantuono with its Castilla squad under No. 30 to preserve first-team slots, drawing criticism from LaLiga president Javier Tebas.
• Mastantuono has been named in the matchday squad for Tuesday’s LaLiga opener against Osasuna, placing him on the bench for a possible debut at the Santiago Bernabéu.
• Head coach Xabi Alonso has lauded the 18-year-old’s maturity, defensive work and “spectacular” left foot, saying he “could have minutes” in the season opener.
• Absences of Jude Bellingham, Ferland Mendy, Eduardo Camavinga and Endrick in midfield have accelerated opportunities for the Argentine newcomer.
• Fan and media excitement has surged around the former River Plate prospect, marked by photos, autographs and vocal acclaim since his arrival.