Allegri insists Rabiot will have a big role to play this season.
He said, "Rabiot has a different engine. I think Adrien will be able to do better this year with the right maturation.
"It was a solid match. I asked not to overdo it, it can happen that you want to kill the game immediately after a month that you don't win. We had patience, but there is still a lot to improve.
"The table says that we have 13 points, the other 20 or a little less. We need to take a step at a time and, if we are good, we will succeed. In the meantime, let's think about the next Champions League match."