21. David Bentley
Look up Bentley’s 40-yard goal for Tottenham Hotspurs against Arsenal in 2008 and you can see how much talent this man had. Many pundits considered him David Beckham’s heir-apparent. However, Bentley’s career ended very early because he fell out of love with the sport.

He was just 29 when he quit soccer. He blamed the rigid nature of the modern game as the basis for his retirement. It just wasn’t fun for Bentley anymore. Bentley no longer had the motivation to train and travel. Today he owns several businesses around the world and has also appeared on television.