manchester uniteds greatest rival is Manchester city .
liverpool might be their big rival outside the manchester area... dublin,bristol,maidnehead...... but not where i grew up. The liverpool v man u game was never metioned when i was growing up in the 70s and 80s
It’s a media rivalry. Their boardrooms, and apparently now their owners, are the best mates that two clubs’ boardrooms could possibly be in football. Brothers in arms those two clubs.
Together, and probably spearheading it all together, United and Liverpool were two of the original 5 who wanted 75% of the TV money before the Prem started. They were two clubs at the heart of the formation of the G14 who extended CL qualifying places to drop down to wherever Liverpool were fading away to. They were two clubs at the heart of the Project Big Picture and the European Super League.
Together they’ve got the media in their pockets. They use the media, and the media use them, to promote United v Liverpool as the big English rivalry. They do it to make themselves look good no matter if they’re 6th and 8th like they were one year recently, keeping each other relevant, and keeping that TV money and sponsors coming in.
You see pictures of Gill and Parry together as well as the Glazers and Henry together.
It’s like the two clubs are in a relationship and they pretend to be big rivals and soup up arguments like some reality TV show would.
In reality, before the 1980s, Liverpool and United were no bigger a rivalry than City and Leeds, City v Everton, City v Liverpool... local-ish rivals, but nothing more.
City have had the same number of title challenges with Liverpool and United respectively as they have each other. So it’s not even like they are big title rivals from history always competing together. Their times as successful clubs have almost never overlapped.