City are hot favourites having thrashed Chelsea 6-0 in the Premier League exactly two weeks ago today.
They are aiming to become the first team to retain the cup since 2010, when Manchester United won it twice in a row.
For Chelsea, meanwhile, the pressure is well and truly on manager Mauricio Sarri. It has been suggested another heavy defeat could lead to him losing his job.
The Italian will be hoping his side can somehow pull out a performance as he looks to buy himself some more time at Stamford Bridge.
Follow all the action from the game right here.