The international football scene has undoubtedly witnessed an incredible rise in youth signings over the past few decades. From Barcelona’s Diego Kochen to West Ham’s Luis Guilherme, numerous legendary wonderkids have gone an extra mile in dominating the international football scene and have dominated the greatest of professional football players with their unmatched exploits on the field in the most crucial matches.
Owing to their spine-chilling moves on the field, these wonderkids have garnered immense fame and recognition from millions of football aficionados from every nook and corner of the world. Have you ever wondered about the top four most expensive youth signings in the history of international football? Well, let’s find out.
In this article we will take a look at the top four most expensive signings in international football.
Top 4 Most Expensive Youth Signings in International Football Scene
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Kylian Mbappé – £154 Million
The legendary French professional football player Kylian Mbappé is at the first spot in our list of the top four most expensive youth signings in the history of football. Often hailed as one of the greatest professional football players of all-time, Kylian Mbappé delivered numerous sensational performances with Monaco and assisted them in reaching the Champions League semi-finals in 2017.
Owing to his unwavering and courageous performances with Monaco, Kylian Mbappé joined the Paris Saint-Germain on loan in 2017 and was permanently moved to the squad in 2018 for a whopping signing amount of £154 million making him the most expensive youth signing in the history of international football. Kylian Mbappé has undoubtedly proved his worth with the Paris Saint-Germain squad and has clinched a record total of six Ligue 1 titles and has scored a record total of 256 goals, surpassing the legendary football players Cavani and Ibrahimović.
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Joao Felix – £108 Million
At the second spot on our list of the top four most expensive signings in international football, we have the 26-year-old Portuguese professional football player Joao Felix, who currently plays as an attacking midfielder or forward for Saudi Pro League club Al-Nassr and the Portugal national team. At the age of nineteen, João Félix attracted enormous fame and recognition from football aficionados from every nook and corner of the world for his successful exploits with Benfica after scoring a record total of 20 goals in the 2018-19 season.
Owing to his unmatched dominance on the field, Joao Felix was signed by Atlético Madrid for a whopping £108 million, making him the second-most expensive signing in the history of the international football scene. João Félix was a part of Atlético Madrid’s winning squad at the 2020-21 La Liga Championship.
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Matthijs de Ligt – £72.5 Million
Next, at the third spot in our list of the top four most expensive youth signings in the history of football, we have the 26-year-old Dutch professional football player Matthijs de Ligt, who is often regarded as one of the most prominent centre-back in the history of the game. As of February 2026, the Dutch football sensation Matthijs de Ligt plays as a centre-back for Premier League club Manchester United and the Netherlands national team.
At the age of nineteen, Matthijs de Ligt was transferred from Ajax to Juventus after successfully leading Ajax to the Champions League semi-finals, eliminating Real Madrid and Juventus in the 2018-19 season. According to reports, Matthijs de Ligt was signed by Juventus for a staggering £72.5 million, establishing him as the third most expensive youth signing in the history of the game as of February 2026.
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Romeo Lavia – £53 Million
Finally, at the fourth spot in our list of the top four most expensive signings in international football, we have the legendary Belgian professional football player Roméo Lavia, who plays as a defensive midfielder for Premier League club Chelsea and the Belgium national team.
After witnessing a path-breaking career with Southampton, Roméo Lavia was transferred to Chelsea for a whopping signing amount of £53 million at the age of nineteen, which continues to be the fourth-most expensive youth signing in the history of the game as of February 2026, ranking him at the fourth spot in our list. Roméo Lavia was a part of Chelsea’s winning squad in the 2024-25 UEFA Europa Conference League and the 2025 FIFA Club World Cup edition.
