Ticket revenue (called the "gate") is split two-thirds to the home team, the remaining third into a pool shared by the rest of the league.

FORBES: Super Bowls Don't Equal Super-Sized Profits

Now sources say Eos is scrambling to line up a fourth round of financing, perhaps from one or more investors in Dubai. (Current backers include U.S. venture outfits Golden Gate Capital, Sutter Hill Venture and Maveron.) Lebron confirmed the ad-agency split but declined to discuss turnover or financing issues.

FORBES: No Rest For A Weary Start-Up