Paris Saint-Germain shocked the world of football in 2017 by activating the release clause of Brazilian superstar Neymar and landing him for a world-record fee.
Barcelona had no option but to let their star man leave, although were handsomely reimbursed with £198million. In La Liga it is compulsorary for all players to have a release clause inserted into their contracts, but they aren't as as prevalent in the Premier League.
Arsenal did activate Luis Suarez's buyout clause during his time at Liverpool , by offering £40million plus £1, but the Reds' ownership stood firm and refused to sell.
Ultimately, Liverpool convinced Suarez to stay for one more season with the promise that they would sell him abroad, which they did, to Barcelona for
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