#4 Paul Allen - $20.3 billion (Seattle Sounders)
Paul Allen is worth around $20.3 billion and is ranked the 44th richest person in the world according to Forbes.
Allen bought the Seattle Sounders which is a part of the American Major League Soccer (MLS) in 2007 when his company Vulcan Sports Entertainment merged with the owners of Sounders FC.
Paul Allen is known around the world for his early works with Bill Gates which culminated in the establishment of Microsoft, a behemoth in the software industry.
His investment in sports after retiring from Microsoft due to his illnesses have largely been because of his extreme interests in sports. He cites the good memories when he watched sports with his father, as the main reason he went into sports investment.
#3 Francois Pinault - $32.8 billion (Rennes)
Francois Pinault is estimated to be worth around $32.8 billion according to Forbes.
In 1998, he acquired French club Rennes and has since that time retained ownership of the club. Beyond football, Francois Pinault has his investments in clothing, retail, fashion, and design. He is known to be a shareholder of Gucci, the leading fashion and retail giant in the world.