This is the price we're paying for not finding a player to replace Pirlo. This right now has very little to do with Allegri. Much more to do with the midfielders at our disposal. In the last minutes we were literally forced to give the ball to Chiellini. Man mark Lemina and Pogba, pressure Bonucci and leave space only around Chiellini. Piss easy. For 65 minutes we had Hernanes where we used to have two or three of Pirlo, Vidal and Marchisio, while in the following 25 minutes we only had Lemina and occasionally Pogba there.
Like I said previously, this will keep happening until both Marchisio and Khedira are back. Once they are back, we'll play much better. Slim chances to witness this, though, having Khedira's medical condition in mind.