This is a time of year when the world of professional football is at its craziest, with obscene amounts of money being exchanged for the best players.
It is only a few weeks since Cristiano Ronaldo left Manchester United for Real Madrid for £80m.
Today's news that former Wales, Arsenal and Celtic striker John Hartson has testicular cancer, which has spread to the brain, is a timely reminder that good health is priceless.
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