Gallery: 6/6
1. Lionel Messi
Former Club: FC Barcelona B
Transfer Fee: N/A
Salary (Weekly): £365,000
Why He's Worth It: Messi joined Barcelona's youth system on a free transfer in 2000, and made his first-team debut with the club in 2004. Since then Messi has become one of the most decorated athletes of all time, including winning the Ballon D'Or five times. Messi is now 29, but remains incredibly valuable to Barcelona and won't be leaving anytime soon. There is no transfer price for the best player on the planet.