It's London v Manchester in the Wonderwall Cup in aid of the London and Manchester Terror Attacks Victims at The Den on Sunday 27th May (kick-off 3pm) - and tickets are now on general sale.
Tickets are on general sale, priced at £10 adults, £6 under 16s and £3 under 12s.
There are three easy ways to buy tickets:
* Online at www.millwalltickets.com (Booking fees apply)
* By phone on 0844 826 2004 and selecting option 2 (calls to this number will cost 7p per minute from your BT landline. Calls from other networks may vary and from mobiles will be considerably more. Booking fees apply)
* In person at the Millwall Ticket Office