#3 Kylian Mbappe - £115 million
French prodigy Kylian Mbappe has certainly lived up to the hype with his mature and brilliant performances for Paris Saint-Germain this season. Currently on loan from former employers Monaco, the 19-year-old is all set to become the second most expensive transfer of all time when PSG finalise the move next summer.
Touted as a future Ballon d'Or winner, the French superstar at the tender age of 19 already has two seasons in which he has scored more than 20+ goals. Expected to play a key role for France at the 2018 World Cup, Mbappe is by far the most talented teenager in world football at the moment.
Mbappe's idol is Cristiano Ronaldo and it is easy to see why. Playing in a style similar to his idol, the Frenchman's blistering pace and calm finishing have earned him plenty of plaudits. If he keeps this up, Mbappe might well go on to become one of the greatest footballers of this generation.