Allegri admits he wants more from Pato.
"Pato doesn't have 90 minutes in his legs, so he won't start the match, but he is physically fit," said Allegri.
"However, when he does recover match-fitness, I expect something more from him. If he runs as hard as the others with the quality he and his teammates have, then Milan can become an even stronger team.
"He's got to make the most of this opportunity that is given to him and learn from the example set by the veterans of Milan.
"One must always improve and be up to the test, otherwise you're going nowhere."