Milan haven't scored now in four consecutive games.
“We are absolutely not happy with the draw. We controlled the game against Newcastle too and created chances, but didn't score, so it was only a point," Leao said afterwards.
“Today we were pretty much in control and created opportunities, especially difficult in an atmosphere like this, but we didn't score again.
“Considering all we've done in these two games, we deserved more. When you don't score in the Champions League, it is a problem. I am happy with the performance, but disappointed with the final result.
“We lacked efficiency, that is where we got it wrong. We have to be more determined in front of goal.
“We know it is a tough group with good teams, but we are going to Paris looking for the victory. We respect our opponents, they have great players, but our objective is to go through to the next phase."