Marseille have taken disciplinary action against Andre Villas-Boas following the Portuguese coach's offer to resign from the Ligue 1 club due to the signing of Olivier Ntcham.
Ntcham joined on loan until the end of the season from Celtic on deadline day despite Villas-Boas saying he did not want the player.
The former Tottenham and Chelsea boss consequently felt his position was no longer tenable and offered to leave, citing a disagreement with Marseille’s sporting policy.
Marseille official statement:
"Olympique de Marseille announces the pending disciplinary proceedings of André Villas-Boas.
"This decision has become unavoidable given the recent and repetitive actions and attitudes that have seriously harmed Olympique de Marseille and its employees who devote themselves to it on a daily basis.
"The remarks made today during a press conference in regard to Pablo Longoria, general manager in charge of football, are unacceptable.
"His exceptional achievements should not be questioned and, on the contrary, were welcomed by all during this winter transfer window which was affected by an unprecedented crisis. Possible sanctions may be taken against André Villas-Boas following disciplinary proceedings."
Marseille have won just one of their past eight Ligue 1 matches, with a 3-1 loss at Monaco last time out their third straight defeat.
Their meeting with Rennes on Saturday was called off after fans stormed the training ground in protest.
Villas-Boas accepted the club's request for time before making a decision on his resignation and he was still preparing the team for Wednesday's trip to Lens.
"I'm focused on Lens. We continue until the board lets me go," he added.