#4 Ousmane Dembele - 20-years-old
Just under 2 years ago, Ousmane Dembele was finishing the 2015/16 season with an 8th-placed finish for Rennes in Ligue 1, narrowly missing out on the Europa League spots. In just two seasons, the 20-year-old is now the fourth most expensive player of all time, behind Neymar, Kylian Mbappe and Phillipe Coutinho.
Donning the #11 shirt for Barcelona, Dembele has yet to show his best for the Blaugrana, due to a long-term injury. However, his performances for Borussia Dortmund in the 2016/17 season were truly something to remember, as the then 19-year-old put multiple Bundesliga defences to the sword.
Even if Dembele plays out only the rest of the season for Barcelona, it is likely that the Frenchman will top Barcelona's dribbling stats (as he was only second to Neymar in Europe in 2016/17) - such is the frequency with which he attempts take-ons and dribbles.
While Barcelona may have parted with a large sum for Dembele, it is pretty much a guarantee that in 5-10 years time, that fee will be viewed as entirely justified.