As a data scientist with 5 years in Premier League analytics, I break down why Oliver Kahn’s warning about Neuer at 40 isn’t just sentiment—it’s biomechanics. With stats on elite goalkeepers’ career longevity, injury rates post-35, and the physical toll of three competitions, this isn’t speculation. It’s numbers. And yes—there's a touch of British dry humour when you realise even legends must eventually say: 'Time to rest.'