"I didn't see it but sometimes football is not only with the ball," the Chelsea star told BBC Sport.
"Sometimes when you have a player who is very clever and says something to you then maybe you are angry and want to 'kill' that player.
"Maybe, and I say maybe, he has made a mistake."
Komen Faiz Faiza: Ooooo..macam tu ke? Kalau gitu tak mengapalah headbutt Metarazzi pun. Itu petanda Zizou even he is a non practising moslem-sense of belonging Moslem tu still ada, maybe lock and hide inside his heart. Perhaps he will be one day a good practising Moslem, Ameen.