At the semi-final stage the two ties are played over two legs.
The first games will be played on the week beginning January 8, with the reverse fixtures taking place two weeks later.
Manchester City and Arsenal booked their places in the semi-finals by seeing off Leicester and West Ham last night.
Chelsea beat Bournemouth 2-1 in a thriller at Stamford Bridge tonight to join them and Bristol City are there too after they upset Manchester United with a 2-1 win at Ashton Gate.
Here's the all-important ball numbers to remember.
[Jan 9 & 23] Chelsea vs Arsenal
[Jan 10 & 24] Manchester City vs Bristol City
The competition sees a total of 92 clubs take part as they aim to navigate their way to the final at Wembley, which is scheduled to take place on Sunday, February 25 in 2018.
Reigning champions Manchester United's hopes of a sixth title were dashed in shock fashion by Bristol City, while eight-time winners Liverpool were eliminated in the third round. PLACE YOUR TEXT ADVERT BELOW:>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> How I Made Me =N=2.5 MILLION In 7 Days from 2 Common Product I Imported and how you can do the same. Click HERE FOR FREE Details right now Warning To Men: This 3 Foods Is Killing Your Erection. Click Here To Know Them REVEALED!! Reduce Your Blood Sugar Level And Reverse Diabetics Within A Short Period Of Time. Click Here To See How Warning: Got Arthritis? 3 Simple Ways To Get Cured And Be Permanently Free From Joint Pains. Click Here To See Them CLICK HERE To See 5 Foods To Avoid If You Have Pot Belly And Want To Reduce Weight. Unilag Student Reveals How She Lost 12kg in 30 days