I guess I will never truly understand the rules of this sport.
I see him getting the ball and then the man. Now, the ref will make a stand on a scale on how reckless that might be and evaluate what to do. It always become very subjective. Back in the days, and still in PL for instance, the rule is clear:
ball -> man = no foul (no matter if the man breaks his leg)
A note on Rabiot:
He offers something else - he's very direct. He's got that thing where he's not afraid of risking the possession. Look how he's constantly looking to get in between the opposition players. Sometimes it looks like the defense has closed down, and yet he tries to get in between. And sometimes at success. That is something any big team, being closed down, needs. Dribbling and touch is superb. With time he can become a class player. But he's still a little rusty.
I have a feeling he's a big-match-player.