 Tribune, which also owned the "Chicago Tribune", "Los Angeles Times", "WGN Television", "WGN Radio" and many other media outlets, controlled the club until December 2007, when Sam Zell completed his purchase of the entire Tribune organization and announced his intention to sell the baseball team.In 2008 Zell began what was basically a competition for a buyer.In late July, a long list was narrowed down to ten, and those ten prospective investors were then narrowed to three, all of whom offered over $1 billion for both the Cubs and Wrigley Field, with the presumptive fan favorites being outspoken Dallas Mavericks owner Mark Cuban and a group led by former announcer Steve Stone and Hall-of-Famer Hank Aaron.