Yale's Jeff Sonnenfeld: I think John Legere could take WeWork job — he likes 'a crazy challenge'

Jeff Sonnenfeld, senior associate dean of leadership studies at Yale's School of Management, predicted in September that WeWork would look to T-Mobile's John Legere as its new CEO. The Wall Street Journal reported on Monday that WeWork is conducting a search for a CEO and Legere is among several candidates being considered. Sonnenfeld joins CNBC's "Power Work" team to discuss his prediction possibly becoming reality.