It's red v blue, Jose v Conte, north v south in the Premier League. Who will come out on top? Prepare yourselves with our ultimate preview.
Scroll down for our interactive countdown to the Premier League clash by taking in the best stats, hearing the views of the men that matter, and having your say on the big battles and crucial team selections.
Who will win?
First up, it's simple enough. Who will come out on top?
Where to watch
That all-important viewing information... you can watch the Super Sunday clash live after Crystal Palace v Tottenham on Sky Sports Premier League and Sky Sports Main Event, with kick-off at 2.05pm.
We won't just be diving straight into it - we'll have preview coverage throughout the morning from Sunday Supplement (8.30am), Goals on Sunday (10am) and Sky Sports News.
We will also be covering the game in-depth on SkySports.com, with our dedicated live blog kicking off early, as well as all the goals and best highlights as they happen on the Sky Sports App.
Find out how to get access to the goals HERE.
Live Nissan Super Sunday
Ander Herrera is out for Man Utd, and while Antonio Conte reported no new injury concerns, David Luiz, Tiemoue Bakayoko and Ross Barkley remain unavailable.
Jose Mourinho and Antonio Conte spoke to the media ahead of the Old Trafford clash. Hit play on the videos below to see what they had to say...
Mourinho v Conte: In quotes
There will be no love lost between Jose Mourinho and Antonio Conte on Super Sunday following the pair's war of words this season. It has become the biggest managerial rivalry in the Premier League in recent months, but it actually started back in 2016. Here's a timeline of their quotes...
Pick your XIs
You're the boss, who do you pick for Sunday's clash? Our team selection tool gives you the chance to do just that...
Your combined Man Utd-Chelsea XI
Thousands of you used our interactive team selector tool to pick a starting line-up mixed with the top players from the two Premier League clubs.
But who were the most popular picks? Here's an XI of the players most frequently selected with four Chelsea players made the cut…
Will Jose stop Hazard... again?
Jose Mourinho went to extreme measures to nullify Eden Hazard in Manchester United's 2-0 win over Chelsea at Old Trafford last season. Will he stop him again in the same fixture on Super Sunday?
"Hazard was desperate to prove a point to the man who questioned his heart during their bitter fall-out in the previous season at Chelsea, and there was no doubt he succeeded. But when he travelled to Old Trafford for the third meeting between the two sides in the penultimate month of the campaign, Mourinho finally enjoyed the upper hand."
WATCH: Chelsea v Man Utd, 1997
Relive a classic Premier League clash between Chelsea and Manchester United from this week in 1997.
Lukaku and Morata's problem
Romelu Lukaku and Alvaro Morata joined their new clubs for big money in the summer but were expectations too high? Ahead of Sunday's clash, we take a look…
"That the pair appeared set to make the move to each other's clubs at one stage in that transfer window only adds to the intrigue. After all of the hype, the social media buzz and the drama of the unveilings, which team actually got the better deal? The overriding feeling is that both Lukaku and Morata have underwhelmed at their new clubs. That seems more than a little unfair..."
Rank the two squads
For the past fortnight we've asked you, our SkySports.com readers, to rank the entire squads in each position.
How did Conte get the best out of Pogba?
Paul Pogba developed into one of the most sought-after midfielders playing for Antonio Conte at Juventus, but under Jose Mourinho this season his form has stalled and his performances have been criticised.
So how did Conte get the best out of Pogba? James Walker-Roberts takes a look...
What now for Rashford?
Sunday's clash marks the second anniversary of Marcus Rashford's spectacular debut - but the forward is not expected to be in the starting line-up.
Adam Bate examines Rashford's form and wonders what's next for the youngster... read the feature HERE
And finally, the Magic Man's prediction...
"It's a must-not-lose game for both teams. If United win this, they almost put Chelsea to bed with a six-point gap, with Palace next up for them. Chelsea, meanwhile, go to Man City next, which will be hugely difficult.
"If United lose this, there could be a point between four teams in the top-four race, that's too close for comfort for United given they've been around second place for the entire season."
PAUL PREDICTS: 1-1 (9/2 with Sky Bet)