Neymar appeared to confront a Manchester City fan at the full-time whistle of the Champions League match at the Etihad Stadium.
Neymar was substituted in the 80th minute and was being heckled by a section of City's support from the visiting dugout.
"I was just playing with him. He began to curse me and I ended up giving him a wave. I can not say what he told me, no. My mother did not bring me up that way. What his mother did not give him, my mother gave me."
Via PA Sport