Manchester City boss Pep Guardiola has been explaining how he changed the team's tactics to guide the Blues to the top of the table.

"I didn't like the way we were playing," he said. "In previous seasons, the wingers were wider and higher, so we came back to our principles. For many reasons, we had to adapt to the quality we had and the players we had in that moment.

"That is the reason I tried to find the way. In the end, I felt having the wingers wide and high helped us to be more stable and the quality of the players do the rest. When we have the ball, we run less.

"When things don't go well, managers have the feeling we don't fight or have the spirit. The reason we didn't play well was because when we had the ball we ran too much. When we have the ball we need to walk. When we don't have the ball you have to run with your life.

"Now I think we are calmer. To play Sheffield [United] is always uncomfortable for us. That system - the 5-3-2 - is difficult to attack. I am a little bit concerned about the game tomorrow (Saturday)."