Neville spent his entire playing career with the Red Devils and had a strong hate-hate relationship with their fiercest rivals.
The former defender, now a pundit on Sky Sports, once said: 'I can't stand Liverpool, I can't stand the people, I can't stand anything to do with them.'
Fiery affair: Gary Neville relished Manchester United's games with Liverpool
But it turns out the 36-year-old is descended from Liverpudlians as his great, great, great grandparents were from the home of The Beatles.
Larger-than-life funnyman James Corden hits Neville with the bombshell on Sky panel show A League of Their Own - to be shown on Friday.
Producers asked ancestry experts to dig into Neville's background for a section of the show.
The former England international, who hung up his boots last season, holds his head in his hands and shouts F*** but he could not bring himself to hold a Liverpool shirt with his name on the back.
I have felt Fergie's fury, says Gill as he admits replacing Scot will be difficultUnited keeper De Gea warns Manchester City: We're coming to get youDalglish hits out at 'disgraceful' fixture list ahead of Liverpool's Chelsea and City testsAll the latest Manchester United news, features and opinionAll the latest Liverpool news, features and opinion