Speaking on the Stick To Football podcast, brought to you by Sky Bet, Vieira explained: "Because of the nine years I spent there, I didn't like you at all."
Jamie Carragher then asked: "Man United or Gary Neville?!"
To laughter from the panel, Vieira replied: "Gary Neville!"
While Neville brushed it off, Keane shook the hand of the World Cup winner, as he continued: "No but it's true, honestly, I couldn't stand you because you were just kicking everybody and especially Robert (Pires) when he was there... And in that game, I was just like, I have to make you aware that today, you're not going to touch Robert because I knew that was the plan for you because you struggled against Robert."
He concluded by claiming: "You were over the top against Robert."