Marseille manager Andre Villas-Boas has handed in his resignation after the French club signed Celtic midfielder Olivier Ntcham.
The Portuguese – who previously had managerial stints at Tottenham and Chelsea – told a media conference that he’d informed the club’s board he didn’t want to sign Ntcham.
Later, the club said it was taking disciplinary action against Villas-Boas.
Marseille announced late on Tuesday night they had signed the French midfielder on loan from Celtic.
Villas-Boas told a news conference on Tuesday: “It was not a decision that I took. It was specifically a player that I said no to.
“I was not aware of it, I learned of the signing when I woke up and went on the number one Marseille website.
“I offered my resignation through saying that I was not in agreement with the sporting strategy.
“The board has not yet given me final feedback. I do not want money, I just want to leave. A gentlemen’s agreement about signing players has been broken.”
Ntcham has returned to his homeland on a deal lasting until the end of the current season.
The Frenchman has been consistently linked with other clubs in recent transfer windows and failed to earn a regular starting place in Neil Lennon’s side.
The 24-year-old, who had joined Celtic from Manchester City in 2017, is under contract with the Glasgow club until 2022, having signed a contract extension a year after arriving in Scotland.