Stefano Pioli and his technical staff are similarly culpable for the team's demise, having allowed the free transfers of Franck Kessie and Hakan Calhanoglu in the last two years without signing replacements.
The Rossoneri's physical preparation is also under scrutiny, after a dramatic increase in injuries over the last three years.
Pioli's fear is shown by his actions on the touchline and his ill-devised decision-making in the vain hope of reviving both himself and his team. The decision to leave Rafael Leao on the bench for 45 minutes perfectly encapsulates this confusion; dropping his star player only for it to blow up in his face.
There are a litany of issues at the San Siro, none of which look remotely close to being solved in the immediate future.