The application deadline is 08:00 on Friday.
United have got 2,845 tickets priced at £49 for adults, £38 for over 65s and £22 for under 16s.
Apply online or by calling 0161 868 8000.
Both the home and neutral ends are sold out but it's worth keeping an eye on Seatwave, as it has been selling neutral end tickets for just above face value in the last few days.
If you're planning on going to the game, you can buy your train tickets now and save £10.40 on the buy-on-the-day price. Details here.
A full travel and pub guide will appear here in the next few days.