Nico Williams' highly touted transfer from Athletic Bilbao to Barcelona collapsed due to registration issues and a lack of guarantees from the Catalan club.

Despite Williams expressing a strong desire to join Barcelona, the move could not be finalized before the summer transfer window closed.

Reports from Diario Sport reveal that while Williams was open to relocating to Barcelona, he sought assurances regarding his registration to avoid complications.

Barcelona's recent struggles with player registrations heightened this uncertainty; for example, Dani Olmo's registration was delayed by 18 days after his transfer, and an injury to Andreas Christensen added further complications.

Williams, who has emerged as a key player for Athletic Bilbao, needed prompt action and clear guarantees from Barcelona regarding his registration status.

Unfortunately, the club was unable to provide the necessary reassurances in a timely manner, resulting in the breakdown of the deal.

The situation was further complicated by pressure from both Athletic Bilbao and Williams' representatives, who pushed for clarity amid the growing uncertainty.

Consequently, Williams will remain with Athletic Bilbao, where he had previously extended his contract until 2027.

This saga highlights the ongoing challenges both clubs and players face in navigating the complexities of high-profile transfers, particularly concerning player registrations and the intricate demands that come with them.