What??? Both Pulisic and Reijnders have scored 3 times as many goals as Gimenez and Gimenez is a pure forward, not something like a CF by any means. Seriously, have you seen their line-up in the Champions leagues?
They always tend to play 4-2-3-1 with either Gimenez or Morata in front if they don't go with the 4-3-3, adding Abraham to the FW.

Milan has a defense problem but fortunately for them with less competitions this year they will also pull the ball from the goal less often.