Find out everything you need to know about the next stage of the competition below...
The draw
With third-round ties split across two weeks due to European scheduling, Palace have had to wait a week to find out their opposition in the last 16.
The fourth-round draw will take place live on Sky Sports following the conclusion of the televised tie between Manchester United and Brighton & Hove Albion tonight.
With that match set to kick off at 20:00 BST, should penalties be avoided, it is likely the draw will begin at around 22:15.
Get news of the fourth-round draw delivered straight to your phone within minutes of it happening, by downloading the Official Crystal Palace App.
The fixtures
Fourth-round matches are due to be played in the week commencing Monday, 26th October.
Once again, any matches which end in a draw in the fourth-round will go straight to penalties. Extra-time is only used in the Carabao Cup from the semi-finals onwards.
Who else is in the draw?
Unlike in the third-round, there will be no draw conditions required, meaning any team can draw any other team still in the competition.
Some five ties are still to be played tonight, involving the likes of Everton, Aston Villa, Manchester United and Manchester City.
Palace are definitely joined in the fourth round, however, by fellow Premier League sides Arsenal, Liverpool, Fulham, Brentford, Bournemouth, Sunderland and Newcastle, as well as League One sides Bradford City and Peterborough United.
What ball number are Crystal Palace?
Palace are ball number 6:
- No 1) AFC Bournemouth
- No 2) Arsenal
- No 3) Bradford City
- No 4) Brentford
- No 5) Chelsea
- No 6) Crystal Palace
- No 7) Fulham
- No 8) Liverpool
- No 9) Newcastle United
- No 10) Peterborough United
- No 11) Sunderland
- No 12) Coventry City or Aston Villa
- No 13) Everton or Wolverhampton Wanderers
- No 14) Fleetwood Town or Sheffield United
- No 15) Manchester United or Brighton & Hove Albion
- No 16) Manchester City or Norwich City