South Londoners first side through to the last eight.
Millwall beat non-league Luton Town 3-0 in the FA Cup fifth round on Saturday.
Goals from James Henry, Rob Hulse and Dany N’Guessan saw the second-tier south London club into the last eight for the first time since they went all the way to the 2004 FA Cup final only to lose Manchester United.
As soon as the fifth round draw was made, memories were revived of an infamous match between the two clubs in 1985 when rampaging Millwall fans wrecked Luton’s Kenilworth Road ground.
But the clubs have met on several occasions since and Saturday’s match, which ended a cup run for Luton that saw them knock out top flight Norwich, appeared to pass off without a major incident inside the ground.
Saturday’s other fifth round ties see Arsenal, bidding to win a first major trophy since lifting the FA Cup in 2005, at home to Championship Blackburn.
Meanwhile Oldham will look to complete a double against Everton, having already knocked the Merseysiders’ near neighbours Liverpool out of the FA Cup this season.
Elsewhere, at least one more side from outside the Premier League is guaranteed a place in the quarter-finals with third tier Milton Keynes Dons at home to second-tier Barnsley.
Sunday sees faltering FA Cup holders Chelsea taking on fellow west Londoners Brentford in a fourth round replay at Stamford Bridge after only a late equaliser by Fernando Torres prevented a mammoth Cup shock at Griffin Park.
Struggling Premier League champions Manchester City are at home Sunday to a Leeds team who ended Tottenham Hotspur’s FA Cup hopes in the previous round while top flight Wigan travel to Championship side Huddersfield.
Runaway Premier League leaders Manchester United face divisional rivals Reading at Old Trafford on Monday.