One of the key features of the new contract is a buyout clause worth €100 million, which will become active at the start of 2026. This means that if another club wants to sign Williams, they will have to pay this amount to release him from his contract.

Williams' salary has also increased significantly, with the new contract offering him €10 million per year plus additional bonuses. These bonuses are tied to his performance in Spain, including appearances for the national team and trophies won.

Many people, including some of Athletic Bilbao's fans, have been surprised by the new contract, especially given the recent controversy surrounding Williams. Earlier this year, a mural of Williams was vandalized three times, sparking rumors that he might leave the club to join Barcelona.