In a fiery statement, Lyon said: "Olympique Lyonnais were delighted to welcome Said Benrahma to Lyon this Thursday to finalise his transfer from West Ham. However, at the start of the evening, while Olympique Lyonnais had entered all the administrative data on the dedicated FIFA platform, West Ham had never launched the slightest technical procedure on its part, despite the repeated reminders from the OL and continuous mutual telephone communication.
"In the absence of this reciprocal action on the part of the English club and following this incomprehensible behaviour, raising questions, the international transfer certificate could not be requested before closing time.
"Olympique Lyonnais deeply regrets this situation and this decision, demonstrating a profound lack of respect on the part of West Ham towards the Institution and the player. The club reserves the right to undertake all appropriate procedures necessary to validate the transaction at a later date, and to hold West Ham responsible if necessary."