Former Marseille manager Marcelino has lamented the «intimidation» and «individual attacks» that made it «impossible» for him to continue in his role as head coach.
The 58-year-old officially resigned from his post on Wednesday after just seven games in charge of Les Olympiens, who hired him to replace Igor Tudor over the summer.
Marcelino oversaw wholesale changes in the transfer market, with the likes of Dimitri Payet, Matteo Guendouzi and Alexis Sanchez moving on, while Pierre-Emerick Aubameyang, Iliman Ndiaye, Ismaila Sarr and Geoffrey Kondogbia were among those to arrive.
Despite navigating their first five Ligue 1 fixtures unbeaten, Marseille have experienced an indifferent start to the new term, only taking one point away from clashes with Nantes, Metz and most recently Toulouse.
The French giants also suffered a disheartening Champions League qualifying exit to Greek side Panathinaikos, and discontent among the Orange Velodrome faithful has hit new heights over the past few days.
Earlier this week, senior club figures and staff chaired meetings with Marseille supporter groups, and members of the club's ultras reportedly threatened Olympiens officials during the discussions.
The internal crisis led to Marcelino bidding a swift farewell, and the former Athletic Bilbao head coach took to social media to offer his view on the matter, claiming that the basic principles of respect had been «violated» by «serious threats, insults and slander».
«We believe that the minimum respect due to the people and professionals who manage the club has been violated here,» L'Equipe quotes Marcelino as writing.
«Today's unstable situation clearly indicates that the sports project for which we were recruited cannot be carried out. We
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