Cristiano Ronaldo’s time at Al Nassr has made him the first person in history to become a billionaire thanks to their football career – but even his wealth isn’t enough to get him into the list of the 50 richest people in the sport.And Wrexham co-owner Ryan Reynolds can forget about it, too – while he’s valued at around £300m, you’ll need a net worth of at least £2.6bn to make our list, restricted to people who own at least 25 per cent of a club, or otherwise have an active role.Numbers are based on publicly available figures. Where possible,…