“Whether City have overtaken Liverpool now, I don’t know… it’ll probably take years for them to create what Liverpool have done," said Scholes. "Liverpool historically are our biggest rivals, they’re always the biggest games and the best atmospheres. But I’m sure City will run them close.”
The answer, in my opinion at least, lies in context. With a short-term viewpoint, City are unquestionably United's principal opponents. But in terms of trophy wins, emotion and one-upmanship, there is arguably no greater opponent than Liverpool.