I understand both Sarri and Pirlo's frustration with this player. Both of them said that Rabiot doesn't seem aware of his capabilities.
And indeed, look at yesterday's assist. He dominates, wins his duel, gets free, powerful run, powerful cross. Nobody else in our team is able to do this. Or that goal against Milan last year. Or against Lazio this year. Yet, he does these things at most 2-3 times per season. Infuriating.