United's youngsters bid to overturn a 3-2 deficit against Chelsea in the second leg of the FA Youth Cup semi-final at Old Trafford on Wednesday.
Paul McGuinness' side battled back from 2-0 down at Stamford Bridge to give themselves a real chance of meeting Sheffield United in the final of the prestigious competition but will need a similarly gutsy performance at home. First-leg goals from Larnell Cole and Paul Pogba boosted the Reds' hopes, although away goals do not count double.
The larger the crowd, the larger the support for the potential stars of the future in the biggest match of their season after already disposing of Portsmouth, West Ham, Newcastle and Liverpool in earlier rounds.
Tickets are still available and are priced at £3 for adults and £1 for over 65s and under 16s. Ticket can be purchased online or by calling 0161 868 8000.
The Ticket Office will be open for collection and new purchases but please try to get to the ground early to allow extra time due to possible queues from 6pm.
The match kicks off at 7pm, with live coverage on MUTV from 6.30pm.
ManUtd.com will have a full report on Wednesday following the action.