But then, statistically speaking, despite his indulgences he has one of the best retention and offensive percentages in the league in both attempts successful and key, so, where Grealish is concerned there's really not much that can be deemed negative or in need or being curbed for the sake of Pep's system.
That is true, however, I'd go so far as to say that he's the first mid-table player (in a long while) that had a real shot at winning Premier League Player of the Year award. Who else can we say, in recent history, that was even in the running? But for his injury, it was almost certain with the way he was playing.