Extracts from Big Norm's book in the Times:
'Although my ankle kept swelling up, it was more a constant discomfort than the debilitating condition it later became and twice-daily ultrasound treatment got me fit enough for a place on the bench for our match at Anfield on Easter Monday in 1988.
'The oddest thing about that game, my last for United against Liverpool, is that our fans make more of my 39-minute cameo than they do of anything else I did in my career. Supporters still come up to me and say: "Thanks for that day at Anfield."
'A 3-3 draw was hardly important in the scheme of things, but it seems to have struck a chord with the fans as the quintessential Whiteside moment. We were 3-1 down when Fergie told me to go on and I was not at all happy.
'My return to the squad had coincided with the news that I had put in a transfer request and I had heard some of our fans use the words "traitor" and "Judas" about me that afternoon. My bad mood was exacerbated by my loathing of being a substitute and when I belatedly gatecrashed the game I wasn't going to let anyone stand in the way of me demonstrating what United were going to lose.
'Within five minutes of getting on, I had put both of Liverpool's best performers on the day, Steve McMahon and John Barnes, on the deck. Barnes was the victim of an Alan Shearer-style elbow to the throat when I'd flung out my arms to shield the ball and unintentionally, but highly effectively, poleaxed him with a blow to the Adam's apple.
'The Kop were even more outraged moments later when McMahon tried to exact revenge on me and I hit him with a boot loaded with 13st. I got the yellow card I probably deserved. It wasn't premeditated, and I'm sure he would deny it, but McMahon was wary of me from then on. From bossing the game and with us down to ten men after Colin Gibson's 58th-minute sending-off, Liverpool cracked.
'When [Bryan] Robson scored our second, I knew we were going to get another. Sure enough, on 77 minutes, I squeaked a pass through their defence that put wee Gordon Strachan clear to equalise.
'What I did that day became such a vivid memory for our fans because it was one of those games when humiliation was imminent and I did what the supporters dreamt of doing - kicked lumps out of Liverpool.'