He said: “Somehow, there were four male Cardiff fans – late 20s, early 30s.
“They recognised me [and] immediately started running their mouths off at me. I ignored the first jibe.
“The second, I responded to and I confronted them about it.
“Words were said. One of them, a tall chap with glasses, made a hostile move towards me.”
McClean added: “People need to understand just because we play football doesn’t mean people can try to take liberties without their actions having consequences.
“That was it. Nothing further happened. And the situation was dealt with.”
The game, which kicked off at 20:00 GMT, saw Cardiff City win 2-1 to secure a spot in the quarter-final against Chelsea at home on 16 December.
Wrexham said the incident was “reported to the relevant authorities” and declined to provide any further comment.
Cardiff City FC said it has not received a formal complaint “from any supporter”, adding it has not been approached by Wrexham or North Wales Police.
North Wales Police said it has not received any reports relating to the incident.
