His 28-minute cameo impressed fans, and Mastantuono made history by playing his first game at Real Madrid in La Liga. Mister Chip from ESPN Deportes reports that Mastantuono became the third youngest foreign player to make his La Liga debut with Real Madrid.

The first to publicly call it out was Miguel Galán, president of CENAFE, who posted on X that Madrid had committed an ineligible lineup. In his view, the club acted with “manifest bad faith” by registering the Argentine with a B team number in order to bypass the first-team squad number restrictions.

Heading to 2025-26 La Liga debut, Real Madrid could be facing a potential lawsuit by rival Osasuna if they happen to include Franco Mastantuono in the squad. Real Madrid are set to kick off the 2025-26 La Liga season at the revamped Santiago Bernabeu against Osasuna.

MADRID — Real Madrid coach Xabi Alonso has praised the maturity of teenager newcomer Franco Mastantuono and downplayed the player's choice of former Barcelona superstar Lionel Messi as the world's best player.

Their signing of the Argentina international was a long time in the making, and many other clubs were interested too

Real Madrid are gearing up for the first match of their 2025–26 La Liga campaign. Expectations are high under Xabi Alonso, especially with new signings Trent Alexander-Arnold, Dean Huijsen and Álvaro Carreras all expected to get the nod at the Santiago Bernabéu in Tuesday’s clash.

MADRID — Real Madrid signed Argentine teenage forward Franco Mastantuono to a six-year deal on Thursday. The former River Plate player, who turned 18 on Thursday, underwent his medical and signed the contract alongside Madrid president Florentino Pérez.

Just a few minutes ago, the Real Madrid players arrived at the Santiago Bernabéu to prepare for the match against Osasuna, which starts in just over an