That season, Man United ultimately overhauled the Magpies, who at one point had raced 12 points clear at the top of the table.
Ferguson famously got under Keegan's skin, prompting his famous "I'd love it" outburst on live television.
Keegan: "I look back and think probably I could have put it over a bit better. But I think I made my point. I was disappointed with something he said.
"Despite what people think, I have maximum respect and we get on well.
"You have to understand the year before when we were really in a battle with them for the championship, we played very, very well and lost 1-0. Manchester United can do that to you.
"The time we beat them 5-0, although we played fantastically - and people remember the game - I don't think there was that much difference in the performances.
"We just put goals on the end of some good football in the second match."