This is because of Sheffield United's Fifth Round FA Cup tie with fellow Division One side Walsall at Bramall Lane. The East Midlands derby between Leicester City and Nottingham Forest scheduled for Monday 31 March is also in doubt because of potential international call-ups.
Full FA Cup Fifth Round draw:
Manchester Utd v Arsenal
Southampton or Millwall v Norwich
Crystal Palace or Liverpool v Gillingham or Leeds
Wolves v Rochdale
Fulham v Burnley
Stoke v Chelsea
Blackburn or Sunderland v Watford
Sheffield Utd v Walsall