I'm surprised that so many people (maybe not here, but elsewhere) think it's a red card. Personally, I think VVD got the ball with the outside of his foot and that's what matters. He doesn't go in with a straight leg against the opponent. There is no intent whatsoever to do so. Had he got the ball with his studs, then I could understand where people saw the error, but now I don't even think it's a freekick for Napoli.
Is anyone on here a qualified referee who could help explain it? It's not like it's gonna change the outcome of the game, just interested to hear how the situation should be interpreted.