Captain Massimo Ambrosini warns Milan have “no more alibis” after their shock home defeat to Atalanta.
The Rossoneri have lost their opening two games at San Siro, their worst home start in Serie A since 1930.
“We have a psychological block and have to give something more, on a physical and mental level, to emerge from this period,” said Ambrosini.
“We aren’t feeling the enthusiasm and are a little more worried than usual at the moment.”
The lack of enthusiasm is tangible, as Milan have sold only 23,618 season tickets – the lowest ever sum under President Silvio Berlusconi’s reign.
“It’s not a justification, but we do have to change quickly and try to call on those characteristics in past years we didn’t need because we had champions who would resolve games by themselves.
“This team can do well and the departure of so many players this summer must no longer be an alibi.”
There are already reports that Coach Massimiliano Allegri is on the brink after weeks of tension with Vice-President Adriano Galliani over transfer strategy.
Mauro Tassotti could be promoted from assistant manager, perhaps with Pippo Inzaghi joining just weeks into his new career as the Allievi Nazionali youth academy Coach.
“On Tuesday we have another game and must face it with a different attitude. The fans were close to us and we can only thank them.”
Milan’s Champions League campaign begins against Anderlecht. Ambrosini and Kevin-Prince Boateng went off due to knocks last night, but are expected to be fit for Tuesday.