Bob Costas

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Co-host Bob Costas attends the 24th Annual Broadcasting and Cable Hall of Fame Awards at the Waldorf-Astoria on Monday, Oct. 20, 2014 in New York. (Photo by Evan Agostini/Invision/AP) ** FILE **

In a photo provided by NBC Olympics, NBC's Bob Costas prepares for broadcast at an anchor desk in Sochi, Russia, Sunday, Feb. 16, 2014. Costas plans to make his return to NBC on Monday after being off the air for a week with an eye infection. (AP Photo/NBC Olympics)

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Bob Costas appears with pink eye during the Olympics in this NBC screen grab.

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In a photo provided by NBC Olympics, NBC's Bob Costas prepares for broadcast at an anchor desk in Sochi, Russia, Sunday, Feb. 16, 2014. Costas plans to make his return to NBC on Monday after being off the air for a week with an eye infection. (AP Photo/NBC Olympics)

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In a photo provided by NBC Olympics, NBC's Bob Costas prepares for broadcast at an anchor desk in Sochi, Russia, Sunday, Feb. 16, 2014. Costas plans to make his return to NBC on Monday after being off the air for a week with an eye infection. (AP Photo/NBC Olympics)

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Bring back Bob Costas! (Illustration by Dana Summers of the Tribune Media Services)

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** FILE ** In this Sept. 15, 2012 photo, sportscaster Bob Costas talks before the start of an NFL game between the San Francisco 49ers and the Detroit Lions in San Francisco. Costas stirred up a hornet's nest Sunday with a halftime commentary about Kansas City Chiefs player Jovan Belcher's murdering his girlfriend (and the mother of his child), followed by his own suicide. "If Jovan Belcher didn't possess a gun," Costas told a TV audience of more than 20 million, "he and Kasandra Perkins would both be alive today." (AP Photo/Tony Avelar, File)