6. Ousmane Dembele – Borussia Dortmund to Barcelona
On 25 August 2017, Barcelona announced that they had reached an agreement to sign Dembele for €105 million plus a reported €40 million add-ons. On 28 August, he had his medical and signed a five-year contract, with his buyout clause set at €400 million.
Barcelona had just sold Neymar to Paris Saint-Germain for €222 million, so the deal meant that Dembele became the joint-second most expensive player, along with Paul Pogba. He was handed the number 11 jersey that was previously held by Neymar.
Transfer fee: €105 million