If you want to discipline world class players in a way that you embarras them and start 18 year old kids in their place then you better pray your method works otherwise you should be gone after the next game.
Unless its someone like Carlo you always choose talent before the coach.
Depends on the expectations the club and fanbase have. At Milan, there is no longer patience for youth which is fucking stupid. We'd have never had a generation like Baresi, Tassotti, Maldini, Costacurta, etc... had it not been for coaches the likes of Nils Liedholm.
Managing a club is like growing a garden, not building a house. You can't just buy the materials and follow an architect's instructions and expect it to be perfect. There are factors you have no control over; the amount of sunlight, the amount of rainfall, the presence of beneficial lifeforms like insects and fungi... not to mention growing a garden isn't about buying ready-made plants and sticking in the soil. Its about the soil itself, how acidic or basic it is. Whether it has enough Nitrogen, Phosphorous, and Potassium. And how the plants themselves share said nutrients and minerals.
Maldini and Boban, then Massara, along with Pioli, created a great garden. They put everything in place to have a winning team, and they succeeded. If Conceicao is to succeed, he will want to start by tending to the club's soil- which includes but isn't limited to the players' mentality, and their willingness to sacrifice. It's in his DNA. I don't see Leao and Conceicao seeing eye to eye, because Rafa will be expected to lead a press in a 4-4-2, or be the secondary press in a 4-2-3-1. Now we wait and see.