The boss in the dugout is typically no longer an ageing former player – most are in their 40s on an exhausting treadmill One of the problems with getting older is that you’re never quite sure whether it’s you or them. Is the world really changing, or is it just you, struggling to adapt? There’s a milestone in life, probably as you’re contemplating university or a first job, when you realise you’re watching a footballer who is younger than you. Then, 15-20 years later, you realise you’re watchin…