The agent of Francesco Acerbi has insisted that the player will need time before he can prove his worth at Milan.
The defender, 24, joined the Diavolo in the summer on a co-ownership basis from Genoa after impressing at Chievo last term.
“Acerbi is working hard to get into the best shape possible,” representative Andrea Cattoli told Milan News.
“He always starts seasons slowly because he has a powerful frame and it takes him a while to find some form.
“The season is very long though and Milan have invested a lot in him. I’m sure that he’ll find some room in the team.
“Acerbi is like a diesel – he’ll come through in the end.”
Milan boss Massimiliano Allegri started with a centre-back partnership of Daniele Bonera and Mario Yepes in the 1-0 defeat to Sampdoria on Sunday.