Speaking to Betway, Petit said: "This is exactly what happens in modern football. It could be his wife, his brother or someone close to the family. I totally disagree with it. It wasn't the first time his wife has spoken out and, to be honest, I was unhappy when I saw what she said because it was not the first time.
"She did it with (Thomas) Tuchel and with so many other people. Everyone is allowed an opinion but if my wife did it, I would be in trouble in the dressing room with players, staff, management and owners the following day.
"I can understand that some fans are happy with what she has done but I'm not happy about it, I'm not happy at all. Again, everyone has the freedom to say what they feel but you have to be very careful, especially when you criticise the boss and take a dig at the manager in the public domain like this. I really, really don't appreciate it. What she has said doesn't help anyone."