Stan Collymore believes if Liverpool were to win the quadruple, it wouldn't match the achievement of when Manchester United won the treble back in 1999.
The Reds would become the first English side to win an unprecedented quadruple should they emerge victorious in all competitions.
While the former Liverpool striker believes a quadruple win would be a huge achievement, Collymore doesn't think it would be an greater than United's treble, Tottenham's double win in 1961 or Arsenal's double win in 1971. The ex-striker thinks United's win would still be the best of them all.
Collymore highlighted how football has changed as years have gone by with financial doping coming into play, better pitches and the game becoming much less physical. However, the Premier League has never seen levels as high as the one currently by Liverpool and Manchester City.
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Collymore said in his column with the Mirror: "I know some of you — youngsters in particular — will scoff and say football is much better these days than it was back then. That we only have to see how many Premier League points have been won over the last two or three years by Liverpool and City, and the huge gap they have created between themselves and the rest of the division, to see that.
"I acknowledge all that, but I also acknowledge it can be no coincidence that, as the game has got physically easier, less combative, with less intimidation and less physical contact, every single record across Europe has been broken. We must also nod to the fact those teams of yesteryear played on dreadful pitches and that there wasn’t the financial doping then that there is today.
"Look at the way Liverpool picked off Virgil van Dijk and Sadio Mane from Southampton. When I played, Matt Le Tissier spent his career with the Saints, but he’d have been taken by one of the big boys after a couple of years these days, whether it was to go into their first team or sit on the bench."
