Jack Grealish has admitted that adjusting to Manchester City’s style of play has been far more difficult than he anticipated. The £100 million England playmaker demonstrated the champions’ depth by coming off the bench to set up the game-winning goal against Chelsea. Guardiola was able to bring on £160m worth of talent on the hour mark at Chelsea and his double switch paid dividends almost immediately. Man City needed Grealish’s incisive pass across the face of the six-yard box to set up fellow substitute Riyad Mahrez for a tap-in at the far post. Grealish’s third Premier League assist of the season matched his total from last season, but the ex-Aston Villa star still had more goal involvements (16 – six goals, ten assists) in his final season in the Midlands than he has in nearly 18 months with City (10 – four goals, six assists).…