Floyd Mayweather's next fight on CBS or too Big a gamble for the network?

Floyd Mayweather's last fight against Manny Pacquiao shattered Pay-Per-View (PPV) records and expectations by tens of millions of dollars, and yet his next fight could reportedly be given away for free to anybody who wants to watch.
According to a source for Lyle Fitzsimmons of CBSSports.com, Mayweather's next, and presumably final, fight could be broadcast live on CBS on September 12:

Mayweather insisted after the May 2 defeat of Manny Pacquiao in Las Vegas that he'd return for a 49th and final fight in September, and an industry source told CBSSports.com on Wednesday that a short list of opponents is being pondered for a Sept. 12 event that could be broadcast live on CBS ... An announcement is possible as soon as the end of the week, the source said.

http://finance.yahoo.com/news/floyd-mayweathers-next-fight-might-215417458.html

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