Arsenal boss Arsene Wenger has hit back at Jose Mourinho's comments about him - and has not ruled out taking action against his Chelsea counterpart.
Mourinho labelled Wenger a "voyeur" and claimed he was obsessed with Chelsea.
"I find it out of order, disconnected with reality and disrespectful," Wenger said in response on Tuesday.
"I will see if I take any action. I don't know yet but I will leave that door open. I don't know what I said that was malicious."
Wenger added: "I was asked a question about Chelsea and gave my honest answer, just like I expect any other manager to do when he is asked about Arsenal.
"It's as simple as that and I can't see what is wrong with that and if there is we would all have to close our news conferences.
"I've said what I had to say about that. I'm not obsessed at all with Chelsea.
"I'm at a club where I'm very happy. Things have changed over the years in English football."
Wenger warned of the dangers of getting embroiled into a battle of personal attacks which he believes would end up restricting people having an opinion.
"When I came to England, I was happy to come and be confronted with the English culture, where the owners of the clubs were English and they opened the door to foreign people.
"Now, in some clubs, it looks like it is becoming different and that's where it's important not to lose your values.
"It is important that the respect you have always shown stays but the ways are becoming different in English football.
"It looks more like foreign people are buying the clubs and employing English people.
"For me, that's not a problem but it's a change and it's very important that the values of the game remain as they were before - respected and admired everywhere.
"Part of it is that everyone can have an opinion about the game."