Sandro Tonali saw red after just 33 minutes, but the Rossoneri still won 2-0 with a Franck Kessie penalty and Rafael Leao wondergoal.
“Once again, after going down to 10 men, we showed heart, intensity, passion and belief. It's another very big victory," the coach told Sky Sport Italia.
“We don't let the results of our opponents put pressure on us. We put pressure on ourselves by demanding the best. There were a few errors, but we showed such unity to bring the result home.
“Every result is important to boost the self-belief. I hugged Sandro in the locker room, he was sad about leaving the team down to 10 men. The issue with VAR is that things look much worse when slowed down compared to the dynamics of the movement, but Sandro will learn from this.
“The penalty we conceded against Lazio too was quite similar. There is contact, but that doesn't mean it's enough for a foul. Anyway, we're not complaining, Sandro will learn from this and mature. He lost the ball and tried to make up for it, so he should've done better."