Chelsea face another trip to Football League opposition in the last 16 of the FA Cup after being drawn against Watford.
The Blues, who beat Ipswich 3-1 on Saturday, needed a replay to defeat Southend in the third round and had to come from a goal down at Roots Hall.
The other definite ties see Hull travel to Sheffield United, West Ham host Middlesbrough and Fulham visit Swansea, who knocked out holders Portsmouth.
Manchester United face a trip to either Derby or Nottingham Forest while Liverpool will meet Aston Villa if they win their respective replays against Everton and Doncaster.
Coventry know they will face Barclays Premier League opposition with the winners of the replay between Sunderland and Blackburn hosting Chris Coleman's side.
Cardiff, who were beaten in last season's final, earned a money-spinning replay with Arsenal at the Emirates today and the winner of that match will entertain either West Brom or Burnley in the fifth round.
The ties will be played on the weekend of February 14/15.
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