http://www.espnfc.us/major-league-soccer/19/blog/post/3164341/was-$4b-bid-for-mls-media-rights-tied-to-adopting-pro-rel-grandstanding

"Four billion dollars. No matter the context in which you look at that figure -- save perhaps when talking about the national debt -- this is a significant amount of money, and apparently it could have been put in MLS' pocket in exchange for its worldwide media rights over a 10-year period.

"But for MLS, the proposal contained the ultimate poison pill, that being the implementation of a system of promotion/relegation. And the proposal was made by MP & Silva founder Riccardo Silva. Silva just happens to be co-owner of NASL side Miami FC, and he's been pushing for a pro/rel system to be implemented in North American soccer for some time. Last year he funded a study by Deloitte that looked at the potential benefits of a pro/rel system, but one that MLS president and deputy commissioner Mark Abbott dismissed as having 'serious credibility questions.'"