Because of the way it had acquired control of the company, Crédit Lyonnais soon put the studio up for sale, with the highest bidder being Kirk Kerkorian. Now the owner of MGM for the third time, Kerkorian's deal with Mancuso quickly angered John Calley, who quit United Artists and was named head of Sony Pictures Entertainment. By selling a portion of the studio to Australia's Seven Network, Kerkorian was able to convince Wall Street that a revived MGM was worthy of a place on the stock market, where it languished until he sold the company to a group of hedge funds tied to Sony, which wanted to control the studio library to promote the Blu-ray Disc format.