Mathys Tel's move to Bayern Munich could make him the most expensive underage player in history

The French striker is one of the surprises of the transfer market. Tel has excelled in the lower categories of France where he is captain of the U17. He is a very fast striker, very powerful in the stride and is considered one of the promises of French soccer. At 17 years of age, he has become a Bayern Munich player for 20 million, which will be 28 million if the bonuses established with his previous club, Rennes, are fulfilled. This figure would make him the most expensive underage player in history, ahead of another Bundesliga player, Jude Bellingham.

The English midfielder joined Borussia Dortmund when he was just 16 years old. He signed from Birmingham for around 25 million euros, making him the most expensive player of his age. His signing has been a success and he has gone from being a promising Championship player to becoming a key player in the English national team's midfield.

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Dortmund is a team that knows how to spot talent very well and another case similar to Bellingham's was Jadon Sancho. The winger arrived at the age of 17 from Manchester City. The German team paid 20 million for a youth player who was sold four years later for 85 million.

Alexandre Pato and Pellegri also appear in the top most expensive youngsters. The Brazilian cost Milan 24 million, and his breakthrough in his first years in Italy made him one of the best young strikers in the world. Pietro Pellegri was considered one of the promises of Italian soccer and at the age of 17, Monaco paid for the striker, 20 million to Genoa in 2017. The gamble went wrong for the Monaco side as the player has only scored two goals for the principality club. This summer he has been transferred for five million to Torino.

Other teenage wonders

Already below the 20 million mark are Pedri and Bale. The Canary Islander arrived in Barcelona for 17 million after playing with Las Palmas in the second division. At just 17 years of age, he earned a place at Barça and in the Spanish national team, with which he was a starter at the European Championship. Gareth Bale signed for Tottenham in 2007. Spurs paid 14 million to Southampton for the Welsh player. He was subsequently sold to Real Madrid in 2013 for 100 million euros.