Manchester City boss Pep Guardiola has birthed several new tactic trends during his managerial career that have revolutionised football. Martin Keown once claimed Guardiola is the best-ever manager in the history of the game — touching on his unprecedented impact on English football. Jamie Carragher praised Pep Guardiola for producing “perfect football” — first with his double-winning Barcelona side in 2011 and his Manchester City team that won the treble in 2023. The way Pep Guardiola sees the game is one of a kind — as revealed by players who have played under him. John Stones admitted Guard…