Carey, the "The Price Is Right" host and a longtime booster of the U.S. national team, recently became a member of Spanish club Barcelona, whose president is elected by the club's socios.
"I went to Europe and saw how Barcelona's organization was structured; I thought we should have that in America," said Carey. "No other fans in the United States will have the chance to do what Seattle soccer fans will be able to do."
The Post Intelligencer reported that the ownership group of Hanauer, Roth and Paul Allen agreed to Carey's plans.
Carey was a member of his high school's marching band in Ohio.