A total of 32 teams will progress to the fourth round of the competition but at the time of the draw there will be more names in the hat due to the fact that nine ties are still undecided.
There will be at least eight replays, while the outcome of the final match of the round - between Brighton and Crystal Palace - will be known on Monday evening.
Perhaps the biggest shock of the third round came on Sunday as defending champions Arsenal were dumped out by an Eric Lichaj-inspired Nottingham Forest.
Liverpool were the first team to book their place in the fourth round as they defeated Everton and the Reds are joined in the hat by Manchester United, who overcame Derby County at Old Trafford.
Manchester City are also in the mix after they easily saw off Burnley, but Chelsea must do it all again in a replay after they could only draw with Norwich City.