Ah, the rheumy-eyed grandpa on the terraces inducting the lad into the mysteries of soccer: how to loathe people wearing different coloured shirts, how to feign injury, how to blow your snot on to the pitch — See, son, you press hard on one nostril to close it, and explode the green stuff out of the other. How to be vain and overpaid and have your best years behind you before you’ve even understood what life’s about.