2. Neymar

While Neymar officially joined Barcelona from Santos for £48m last summer, reports have recently revealed that the Catalan giants did, in fact, pay upwards of £70m for the Brazilian sensation.

Whatever the true cost, one thing is certain: Neymar will cost considerably more than £86m in the near future.

The 22-year-old will not peak until around 2020, by which point the biggest clubs in world football may already be shelling out £100m+ for the best players.

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