AC Milan midfielder Giacomo Bonaventura admits they've underachieved this season.

Milan were defeated by Juventus on the weekend.

“We players are all aware that what we've done so far isn't enough," Bonaventura admitted in an interview with Sky Italia.

“We must do more. We have to take as many points as possible before the Christmas break.

“A change to 4-4-2? The boss [Sinisa Mihajlovic] will decide. We just have to think about doing well on the pitch.

“The tactical aspects are down to the Coach, we're behind the Coach."