1) Julie Chen leaves CBS this they hire a new host
2) The new CEO totally cleans house of the Big Brother production and casting crew to bring new life to the series
3) Julie Chen stays with CBS & continues with her hosting per usual
4) CBS cancels Big Brother
5) CBS cancels Big Brother & it's picked up by another network such as Pop
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In actuality, Big Brothers ratings are good so the only reason it would be cancelled would be to evade this CEO mess. I think The Talk is in bigger trouble then Big Brother. Plus all of the CBS fall shows look TERRIBLE, none will probably last long. With Big Bang Theory ending I doubt they'd want to kill TWO high rated shows.