Manchester City manager Pep Guardiola revealed he would retire if possession-based football was unable to achieve results.
Ahead of a huge Manchester derby against United at Old Trafford on Sunday, Guardiola's City are eight points clear at the top of the Premier League.
In a dominant start to the campaign, City have scored 46 goals and conceded only 10 in 15 league games.
"If that is going to happen, I'm going to retire, because I don't feel it another way," Guardiola said.
"I could defend more deep, but I want to have the ball and I want to play. From my first game with the second team in Barcelona, I always try to look for that.
"Sometimes it doesn't work, but that's because the other team is good or we are not good enough.
"But the idea [of changing], that is not going to happen. Never. Never in my life."