Sinisa Mihajlovic is reportedly under examination after the defeat to Fiorentina and could be replaced with Roberto Donadoni or Luciano Spalletti.
The 4-0 loss at San Siro had disastrous effects on the club's collective environment, with morale falling to a new low and emphatic protests by the tifosi.
According to La Repubblica, the situation is dire enough that Mihajlovic's bench is no longer certain.
After the game, the publication reports, there was a long confrontation between the Coach and joint-CEO Adriano Galliani. The latter had just been talking to President Silvio Berlusconi too.
The most likely candidates to replace Mihajlovic, should he depart, are said to be former Italy and Napoli Coach Roberto Donadoni, and former Roma and Zenit St Petersburg Coach Luciano Spalletti.