The management gambled again and failed. Again. At this point even references to a dire financial situation cannot justify not signing of a real coach, because losing all titles and, quite possibly, a place in TOP 4, will cost this club additional dozens of millions in losses this year, and much more in years to come.
If the management, having access to the entire EXOR as a financial leverage, cannot find the necessary funds and then at least get a new coach to boost the team's confidence for the remainder of the season, the entire board and corporate management should resign as useless.