Thats not possible with Allegri, unless against very shitty opponents or chasing a goal in last 20 mins etc. The first thing Allegri did was ditch Leonardo's suicidal trident approach, where Milans shitty slow midfield was 2 fold exposed when playing with 3 forwards who barely tracked back.
He switched to crowding the midfield with 3 DMs basically as soon as he took over. Thats one of the reasons he and Pirlo parted ways too, his approach of covering DMs, and not someone like Pirlo in holding regista role, that can be a liability defensively.