During the 2013 season, there were rumors that the club was going to be sold to Ansan city government after the death of Sun Myung Moon, the founder of the Unification Church. Moon was extremely devoted to football so the Unification Church had been running the club, but after his death, the Unification Church's board of directors saw no reason to continue running the club and stated their thoughts on selling the club to another organization. After the rumor was reported by the press, Ansan's mayor officially mentioned that the city is in a process of purchasing the club from Ilhwa. Estimated number of 800 supporters protested in front of the Seongnam city hall stating the city could not lose one of the most successful clubs in the Asian football's history. Seongnam city started negotiation to purchase the club from Ilhwa. In October 2013, Lee Jae-myung, the mayor of Seongnam, had a conference and announced that Seongnam City Council agreed to take over the club from Ilhwa Sports and will be participating under the name "Seongnam FC".