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been the driving force behind a record 21-game winning run.

Guardiola said: “In football, in the cups, in the Champions League, it can take one game and you are out.

“That has to be the warning, to be careful, to keep your feet on the grass and move forward.

“Sometimes, when you are fighting for the Premier League for a long time, you also become incredibly focused on the other competitions. But sometimes, when you win something, you can drop off a little bit – and it is more difficult.

“I said to the guys recently that the only way to arrive at the best moment in the cups and the league is to be focused all the time. This is what we have to do.

“We are good. We’ve had incredible results and made a lot of points – winning 15 games in a row in the Premier League is incredible.

“But let’s try to extend this run. You

but it is a lot of games and the schedule is hectic.

“I think people underestimate this. It is not easy and other teams are very good.

“We try to win whatever is possible and I know people can talk about it, but it is hard work.”

City have won a record 21 are only so good when you are focused only on the next game.”

City will set a new club record of 29 unbeaten games if they avoid defeat against rivals United.

And while Guardiola admitted he’s been sleeping much better since their incredible run, he insists he will not make a final judgement until the end of the season.

He added: “I told the players what we have done is incredible – but only after we have won the title we can say that’s it.

“For the last three months, every night you sleep better because if you win it gives everyone confidence.

“But, of course, it depends on us to continue and eventually arrive at the end to try to win the Premier League.

“At the end, if we can eventually lift our box of special memories and celebrate, we can say that during the toughest period of the year here in England, we were incredible.”