Real Madrid has embarked on a fresh chapter in its illustrious history with the appointment of Xabi Alonso as head coach. One of the standout early decisions under his leadership is the assignment of the legendary number 10 jersey, left vacant after Luka Modric’s departure following the 2025 Club World Cup. In a recent press conference, Alonso revealed that the iconic number will be worn by rising Argentine star Franco Mastantuono. “He has all the traits of a future superstar and is worthy of the shirt,” Alonso stated. This move signifies not only a new era under the Basque manager but also his faith in youth and long-term success.

Mastantuono, a 17-year-old attacking midfielder from River Plate, has sparked major excitement among fans. Widely regarded as one of South America’s most promising young talents, he made a strong impression during the Club World Cup with his vision, technical skill, and creativity. According to Diario Olé, Alonso personally informed Mastantuono of his plan to mold him into a “classic number 10,” evoking comparisons to club legends like Ferenc Puskás, Zinedine Zidane, and Modric. This move reflects Alonso’s belief in the teenager’s ability to handle the pressure and significance of such a storied number.

The 2025–26 season is pivotal for Real Madrid, as the club looks to bounce back from a trophyless campaign under Carlo Ancelotti. Alonso, known for transforming Bayer Leverkusen with an energetic, competitive style, brings renewed hope. His legacy at Madrid as a player—236 appearances and six major titles, including the club’s 10th European Cup—gives him credibility in the dressing room. However, giving the number 10 to a teenager has sparked both excitement and skepticism. While many applaud the bold decision, others question whether Mastantuono is ready for such a burden.

This choice is closely tied to Alonso’s managerial philosophy. At Leverkusen, he showed a knack for nurturing young talent, and during his official introduction as Madrid manager on May 26, 2025, he emphasized the importance of tactical versatility and player communication. Naming Mastantuono as the new number 10 not only highlights his skill but also reveals Alonso’s intent to play creative, ambitious football led by game-changing individuals. According to Marca, Alonso plans to build the team around stars like Vinicius Jr., Kylian Mbappé, and Jude Bellingham—with Mastantuono as the creative engine in midfield.

However, the transition won’t be easy. The Club World Cup brings a congested schedule, and Alonso must balance a squad that mixes seasoned veterans with new signings like Dean Huijsen and Trent Alexander-Arnold. Managing a 34-player roster and dealing with the departures of key figures such as Modric will test his tactical and logistical skills. Additionally, players like Rodrygo may see their roles diminish with Mastantuono’s rise, adding another layer of complexity. Still, Alonso’s strong backing of the young Argentine signals his belief that Mastantuono is not just a rising star but a foundational piece for the club’s future.

Madrid’s passionate fanbase eagerly awaits Mastantuono’s debut in the number 10 shirt. Though comparisons with past greats are inevitable, the youngster appears to have the composure and talent to meet expectations. Online, fans have responded with a mix of optimism and caution, recognizing that success will require both individual brilliance and Alonso’s ability to forge a cohesive team. As the team gears up for its Club World Cup opener on July 18, the spotlight is firmly on Mastantuono and how Alonso shapes a squad determined to reclaim its status atop world football.

Entrusting the number 10 shirt to Mastantuono symbolizes both tradition and hope. Alonso has made a clear statement about the future he envisions for Real Madrid. Backed by the club and cheered on by the fans, the young Argentine now has the chance to carve out his own legacy in the famous white shirt. Time will tell if he rises to the occasion—but for now, he is the new symbol of Madrid’s next generation.