Manchester United lock horns with Manchester City this weekend looking to show how far they have come under Erik ten Hag.
Almost seven months ago United, then under interim boss Ralf Rangnick, were easily swept away 4-1 at the Etihad. Barring injury, there is likely to be only four survivors from the starting XI that day who take to the field this coming weekend.
Goalkeeper David de Gea remains undisputed number one, whilst Scott McTominay has enjoyed a fine start to the campaign keeping new signing Casemiro out of the team.
Bruno Fernandes and Jadon Sancho are the other two who are likely to keep their places as United aim to make it five league wins on the spin.
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Here, we look at three mistakes that United under Rangnick made where Ten Hag will want to avoid this Sunday.
Keep the door shut early on
It sounds easier than it is, especially when coming up against the might of City in their own backyard.
But the last derby clash saw the champions dash out of the blocks as United looked like rabbits in the headlights. Kevin de Bruyne was the tormentor-in-chief and there was barely five minutes on the clock by the time he fired the first goal of the day in.
That early strike set the tone as City ran United ragged. The longer Ten Hag's side can keep the hosts quiet, the more frustrated they and the majority of fans inside the Etihad will get - something that will favour United.
Deploy a proper forward
Admittedly Rangnick's hands were tied in this regard. Injury had robbed him of both Cristiano Ronaldo and Edinson Cavani so Bruno Fernandes started as an auxiliary centre-forward.
Safe to say it was not a success, with the Portuguese dropping deep as was to be expected of someone who is a central midfielder by trade.
This time around United are in comparatively rude health with Ronaldo, Marcus Rashford, Jadon Sancho and Antony all available. The latter three of those all starred in the win over Arsenal earlier this month and will be full of confidence heading into this one.
Show derby spirit
The 4-1 loss in March was met with a tirade of criticism from fans and pundits alike.
Ex-United goalkeeper Peter Schmeichel said: "Far too many players are either not good enough, or don't care enough."
Arguably the biggest dig came from former skipper Roy Keane, who questioned the derby desire of the squad.
"United gave up and in a derby, in any game, it's unforgivable," said the Irishman.
Those taking to the field this weekend will be eager to atone for that last result, regardless of whether they featured or not. If nothing else, Ten Hag will be demanding the right attitude is employed as he and his new-look side receive their first proper acid test of the season.
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