For me, only get rid of Pioli if we can get a definite upgrade.
If we don't get CL this year, then I think he has a very tough job to stay on and I'm conflicted on it.
But more than that, if we get rid, we need an upgrade. Italiano is not an upgrade. Conte, while an upgrade in some respects, in others is absolutely terrible and so I don't want him.
De Zerbi has done well, but I think we all have to agree that it is all a risk - He has done well with Brighton, sure, but it's no guarantee. Look at Eusebio Di Francesco for a similar trajectory manager. Nothing is a guarantee.