Williams had initially agreed to join Barcelona but suddenly changed his mind and signed a 10-year deal with Athletic instead.
According to Tebas, Williams was concerned about being registered without issue, and Barcelona was not able to provide the necessary guarantee.
Tebas believes that this uncertainty was a major factor in Williams' decision, as he was unwilling to take the risk of being part of a situation that might be unpredictable.
Tebas compared Barcelona's situation to previous seasons when the club signed players and waited until the last minute to register them.
He thinks that this approach can make great players like Williams hesitant to join the team, as they prefer to avoid uncertain situations.