Qatar Foundation
On December 10, 2010, FC Barcelona announced that they had agreed a shirt sponsorship deal worth close to €170 million with Qatar Sports Investments to place Qatar Foundation’s name on the front of the team’s shirts, ending Barcelona’s tradition of not accepting payment for sponsors displayed on its jersey.
The deal included a clause allowing a switch in sponsor after the first two seasons, so Qatar Airways has since taken over as the main sponsor since July 2013.
In the time, the Catalan giants have splashed the cash on quite a few occasions on the likes of Alexis Sanchez, Cesc Fabregas and Neymar and not to forget in paying the salary of a certain Lionel Messi. And for a club like Barca, who are reportedly burdened with debt, these deals have been a godsend.