Enda McEvoy: When you're arguing over the biggest club in football, don't forget the intangibles - like aura

The Athletic came up with a corker the other day. What is the biggest club in English football?

Liverpool's Mohamed Salah and Manchester United's Harry Maguire battle for the ball at Anfield last January. Photo: Martin Rickett/PA Wire. 

For human beings it’s straightforward. In case of emergency, break glass.

For sports editors and sportwriters it’s equally uncomplicated. In case of space to fill, concoct a list.