SAN FRANCISCO, CA - FEBRUARY 05: A view of the logo during ESPN The Party on February 5, 2016 in San Francisco, California. (Photo by Mike Windle/Getty Images for ESPN)

Tensions between two ESPN personalities described as “poisonous” after network shakeup

What a shame it has come to this.

Mike and Mike have been a part of ESPN's early morning radio lineup for over 15 years, but their show is coming to an end supposedly at the end of 2017.

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Related: Mike Golic's son eviscerates ESPN after the network broke up Mike and Mike 

Mike Greenberg is leaving the show to host his own TV show on ESPN, while Mike Golic will continue to appear in the early morning radio slot with new co-host Trey Wingo.

However, according to Sports Illustrated's Richard Deitsch, the relationship between the two longtime partners is deteriorating.

The show is supposed to last until December, but one ESPN employee who worked on the show said the show might end sooner than that due to conflict between Greenberg and Golic. As Deistch  explains it, the tension began when ESPN started discussing giving Greenberg his own show — but Golic was left in the dark. That upset the former college and pro football player, who felt he should have  been informed. Then, Greenberg dropped the agent that served both Mike and Mike, and signed a reported $6.5 million contract extension that far exceeded his partner's deal.

"It's really a poisonous atmosphere right now," the staffer told Deistch. "Most of us don't see the show lasting through its contractual end. But I give both these guys immense credit because when the light comes on, you would not know what's going on. They are pros on air."

Other staffers said the two basically ignore each other before and after shows, and they don't communicate during commercial breaks.

Mike and Mike began their partnership on-air in 1998, and they have the longest tenured radio show at ESPN. The show is also aired on ESPN2.

The show was supposed to move to New York City in early 2016, but it never happened. Greenberg is from Manhattan, and Deitsch said he was pushing for the move to New York from Connecticut.

Golic's new show with Wingo will also include his son, Mike Golic Jr. Golic Jr. will be on the show from 6 a.m. to 7 a.m. each morning, and the show will air on ESPNU.

Greenberg's show is set to begin on Jan. 1, 2017, and it will air on ESPN.

(h/t Sports Illustrated)