Pep Guardiola has warned the rest of the Premier League there will be no let-up from his rampant Manchester City side as they march towards the title.
Remorseless City are 13 points clear of local rivals United at the halfway stage of the season - the biggest lead at Christmas in top-flight history.
And Guardiola said City, currently on 55 points and well on course to beat Chelsea’s Premier League record of 95, will not tire in the second half of the campaign because they have what Barcelona and Bayern Munich had.
“Fatigue? I don’t think so,” said Guardiola. “It may happen, but we’ve a good enough squad.
“We ran a lot last season as well. As a manager, I’m able to let them run at a high intensity.
“That’s a quality of the players I had in Barcelona, Bayern Munich and now here.
“We’re able to convince them how good it is going forward, be aggressive, without the ball, because after that we’re quick and take decisions with the ball.
“There’s no reason to say that if we’re able to do that in two years, why we cannot do it in the future. To that, I have no doubts.”