Jack Grealish has stressed one of the important lessons he has learned at Manchester City that the players constantly discuss. READ MORE: Who is Jack Grealish? Step into the hedonistic world of Man City’s £100 million wingerBeing at City, the £100 million man would likely have learned several lessons, both on and off the pitch. Fundamentally, the Englishman would have understood the concept of division of labour at a big club. In a mid-table team like Aston Villa, it is natural that the best player at the time would constantly be handed the ball to create a moment of magic; as was the case wit…