"Stade Rennais has initiated a procedure regarding its head coach Mr. Julien Stephan and his assistants Mr. Denis Zanko and Mr. Bouziane Benaraibi," Rennes said in a statement.
"While awaiting the forthcoming decision, the professional team’s training sessions will be handled by Sebastien Tambouret, assisted by Denis Arnaud and Pierre-Alexandre Lelievre."
Rennes suffered their fifth defeat of the Ligue 1 season last Sunday when they lost 4-0 at AJ Auxerre.