French giants Lyon have blamed West Ham United for the collapse of a deadline day transfer.
The Hammers were hopeful of selling Said Benrahma in this window to bring in other players.
However, the Hammers confirmed on Friday that a move could not be completed on time.
In a strongly-worded statement, the Ligue 1 side criticized West Ham's "incomprehensible behavior."
In a statement, the club also wrote: "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."
Benrahma has been a Hammer since 2020 and has a contract with the club until 2026.