Manchester United is not the only club on Sir Jim Ratcliffe’s ownership portfolio. The British billionaire also owns a stake in French club Nice and Swiss side FC Lausanne-Sport. Beyond football, he also has significant investments in cycling and Formula One. But Manchester United are now the flagship of Sir Jim Ratcliffe‘s footballing empire after his minority takeover deal was completed in December. Multi-club models have become increasingly popular in modern football, with rivals Manchester City heading the City Football Group and Jurgen Klopp recently joining the Red Bull Group. United are…