Leading figures in French football have voiced their support for Paris Saint-Germain manager Laurent Blanc after Serge Aurier's verbal attack on him.
Aurier, 23, has been indefinitely suspended by PSG after a video rant about Blanc and teammates including Zlatan Ibrahimovic and Angel Di Maria.
The Ligue 1 champions described the conduct as "unacceptable," and Ivory Coast international Aurier has since apologised to Blanc.
The right-back joined PSG on loan from Toulouse in 2014, with the move made permanent over the summer in a €12 million deal.
Legendary former Auxerre coach Guy Roux said he would have "slaughtered" Aurier and claimed the player should "go to prison" for his behaviour.
"I'm appalled," the 77-year-old told Europe 1. "PSG are our standard-bearer. They've been working like crazy for four or five years.
"Those who were at PSG beforehand too, indirectly... all of those people, three days before a decisive match [against Chelsea in the Champions League], have been betrayed.
"But I'd say to you the penalties should be real penal sanctions. He should go to prison."
PSG would like to express support for head coach Laurent Blanc and the entire squad in the Serge Aurier case pic.twitter.com/jRMQczbTph
- PSG English (@PSG_English) February 15, 2016
Lyon president Jean-Michel Aulas said he believed Aurier's behaviour was "approaching" a sackable offence.
"If it happened at Lyon, based on what I know and with images that I couldn't control, I would hand down an extremely serious penalty," he told reporters after Lyon's win over Caen on Sunday.
"Because as a player you can't -- whatever the level -- publicly criticise not only your teammates, and even less so your manager."
Saint-Etienne boss Christophe Galtier said PSG had been "attacked" and added: "When I see what he's allowed himself to say about his teammates, about the man who went to find him at Toulouse in order for him to break through at the highest level with PSG, it's difficult to digest.
"Obviously there's solidarity between managers at times like this and I'm united with Laurent. PSG are going to have to try to manage the best they can a crisis that's arrived at an important time for the club, coming from a player who was nothing special before coming to PSG.
"He was in contact with maybe the best European players and in contact with a great manager. I hope he won't be in contact with anyone any longer."
Former Chelsea defender Frank Leboeuf told Telefoot he felt Aurier was "finished" at PSG, while ex-PSG player Jean-Michel Larque told Le Parisien that in his day it would be "out of the question" for Aurier to play for the club again.