There is nothing like the son of a Manchester United legend bursting onto the scene to make you painfully aware of your own mortality. Red Devils supporters from way back in the 1990s will wince at the thought of Kasper Schmeichel – the offspring of iconic goalkeeper Peter Schmeichel – preparing for his 38th birthday. Fans who grew up in the naughties, meanwhile, will remember when a teenage duo of Wayne Rooney and Cristiano Ronaldo were taking the Premier League by storm. Flash forward two decades, while Cristiano Jr is honing his talents at Al-Nassr over in Saudi Arabia, the trophy bug is bi…