Overview

• The 23-year-old winger signed an extension through June 2035 at San Mamés in a ceremony attended by President Jon Uriarte, sporting director Mikel González, his brother Iñaki and his mother María Arthuer.
• The agreement is the longest in the current first team and features a release clause reported at around €100 million.
• Williams’s decision ends FC Barcelona’s pursuit after LaLiga blocked Barcelona’s registration over financial fair play non-compliance.
• A Lezama academy graduate, Williams said he looks forward to making history at San Mamés alongside fans and family.
• Athletic Club returns to the Champions League next season for the first time in 11 years, with Williams poised as a key figure in their campaign.