The winger for Real Madrid, **[Franco Mastantuono](https://www.transfermarkt.com/franco-mastantuono/profil/spieler/XXXX)**, will make his debut as a starter in the opening match of the UEFA Champions League group stage against Marseille at the age of 18 years and 33 days. This achievement makes the Argentine the youngest player in the history of the “Royal Club” to be included in the starting lineup for a Champions League match.

Previously, the record was held by Endrick, who, in November 2024, started for the “whites” at the age of 18 years and 73 days.

Mastantuono’s current contract with the club runs until the summer of 2031. As reported on Transfermarkt, his market value is estimated at €30 million.