Both Manchester sides faced off in last year’s final with Ilkay Gundogan’s brace firing Pep Guardiola to cup glory.
Now the two sides meet again as City look to claim another domestic trophy after securing their fourth successive Premier League title last weekend.
Erik ten Hag’s side, meanwhile, will look to end their season on a positive note after a disappointing league campaign.
The Red Devils finished eighth but can still secure Europa League football for next season if they pull off an upset in the capital this weekend.
Even a win, however, may not be enough to save Ten Hag’s job, with reports suggesting that the club’s owners are already sounding out replacements for the Dutchman.
But what happens if the games end in a draw after 90 minutes? Here’s what you need to know.
Will the FA Cup semi-finals go to extra time or straight to penalties?
If the FA Cup final finishes in a draw after 90 minutes, it will first go to extra time.
If after 30 minutes of extra time, the teams are still level, the game will then go to penalties to determine which team lifts the trophy.
At this stage, both teams will see who can score more out of an initial five penalties.
If they are still level after all of this, sudden death penalties begin, where the first team to go ahead after an equal number of spot-kicks wins.
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