Kylian Mbappe is currently the most valuable footballer in the world. At the age of just 22, the Paris Saint-Germain striker is already a bonafide superstar and a future Ballon d'Or winner. He's scored goals for fun over the past few years, winning a plethora of trophies with PSG and a World Cup with France. Mbappe is currently one of only two players in the world valued at over £100 million. The Frenchman's new valuation over on Transfermarkt after their latest Ligue 1 update is £144 million, which is well clear or £108 million-rated Harry Kane in second-place. With those two and their six-figure values leading the line, the world's most valuable XI is now worth just £10 million short of an eye-watering £1 billion.