Millwall manager Neil Harris has urged fans not to risk ruining their FA Cup fairytale with unsavoury scenes off the field at Tottenham on Sunday.
The League One giantkillers travel to White Hart Lane for the last ever cup tie at Spurs' famous ground with 3,681 loyal supporters in tow.
But with police labelling the quarter-final 'high risk' and even more away fans expected to head for north London ticketless, fears over hooliganism and violence have been raised around Millwall again.
Scotland Yard are still hunting supporters involved in disorder in the Lions' last-round win against Leicester City.