https://www.cnbc.com/2018/11/16/jeffrey-sonnenfeld-facebook-should-probably-replacesheryl-sandberg.html > Management guru Jeffrey Sonnenfeld on Friday called for a leadership shake up at Facebook, slamming COO Sheryl Sandberg after her denial of a New York Times report that she ignored Russian activity on the social network and thwarted investigations. > Sandberg should "probably should be replaced," said Sonnenfeld, senior associate dean for leadership studies at Yale University. She's "completely dispensable," he said on CNBC's "Squawk Box," adding that she should at least be put on probation.