By Ewan Murray As much as fans would like to think otherwise, elite modern football is unashamedly centred around cold, hard and often dirty cash. With transfer fees rising exponentially, player wages skyrocketing and lucrative brand deals reaching new peaks, exorbitant sums of money are now the beating black heart of the beautiful game. The likes of Cristiano Ronaldo, Lionel Messi and Kylian Mbappe are, rather unsurprisingly, among the highest earning players across the world, but even football’s mediocre talents seem to earn a small fortune on a weekly basis these days. Here are football’s b…