AC Milan coach Massimiliano Allegri has admitted that he is "worried" with his side's poor start to the season.

The Rossoneri lost 1-0 to Atalanta at home in Serie A on Saturday, and have now picked up just three points from as many matches in the league.

"We only had one more point at this stage last season," said Allegri. "The team has certainly changed a great deal.

"I admit to being a little bit worried because it's not good enough to be playing like this. We need to be more positive and carefree.

"The lads have to grow up and realise playing with nervousness will not allow us to progress."

Allegri added that Milan need to start winning again.

"We definitely have to get back on track, but more on a psychological level rather than a technical one," said the Italian.

"There are some young lads here and they need to grow up quickly."

AC Milan will begin their Champions League campaign on Tuesday with a home game against Anderlecht in Group C.