Cambridge overcame Luton on Saturday to earn their place in Monday’s draw, and their reward is a tie against 11-times winners United, who saw off Yeovil Town 2-0 on Sunday. Richard Money’s men are currently 14th in League Two, and beat Fleetwood in the first round of the Cup, before seeing off Mansfield after a replay in the second.

FA CUP FOURTH ROUND DRAW
Southampton/Ipswich
Cambridge United
Blackburn
Chelsea
Derby
Preston
Birmingham
Aston Villa
Cardiff
Liverpool
Burnley/Spurs
Brighton
Rochdale
Sunderland
Doncaster/Bristol City
Man City
 v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
 Crystal Palace
Man Utd
Swansea
Millwall/Bradford
Chesterfield/Scunthorpe
Sheffield United
West Brom
Bournemouth
Reading
Bolton
Leicester
Arsenal
Stoke
Fulham/Wolves
Everton/West Ham
Middlesbrough
Meanwhile, Chelsea will host either Millwall or Bradford City, who drew 3-3 on Saturday, at Stamford Bridge.
The winners of Liverpool and AFC Wimbledon, who play on Monday evening, will face Bolton Wanderers at home.
Holders Arsenal must travel to Brighton and Hove Albion, managed by former Tottenham assistant Chris Hughton.
Manchester City will face Middlesbrough at the Etihad Stadium, while either Burnley or Spurs will face Premier League rivals Leicester City.
Preston North End, who beat Norwich City on Saturday, will host Sheffield United.
North End have won the competition twice, in 1889 and 1938, while the Blades have four triumphs to their name, in 1899, 1902, 1915 and 1925.
New Crystal Palace boss Alan Pardew could be set for a reunion with former club Southampton, should the Saints beat Ipswich in their third-round replay. Pardew left the south coast club under a cloud in 2010 amid reports of a rift with then owner Nicola Cortese.