4. Malcolm Glazer
Club: Manchester United
Worth: $4.5 billion
Malcolm Glazer nearly caused a riot at Old Trafford after his purchase of the club for $1.3 billion.
The New Yorker borrowed heavily against the club to make the purchase, leaving United in quite a sizeable amount of debt.
But fans should not be too concerned. Glazer could pay back the full $569 million debt tomorrow if he wants.
Glazer has left the day-to-day running of the Red Devils down to his sons and United have continued to be successful, winning five Premier League titles.