As a self-confessed Rocky Balboa advocate, Jurgen Klopp will surely be aware of - and in agreement with - the gut-punching message.
"Time takes everybody out," says Sylvester Stallone's fabled character when explaining, years later, how he managed to beat the seemingly invincible Apollo Creed. "It's undefeated."
The sentiment is universal, whether applied to a fictional boxing saga or somewhat more real events on a football pitch. And in terms of an ambitious, leading European team such as Liverpool, keeping an eye on the average age of a squad is an ongoing task, both to maximise playing potential and possible resale values.
