After drawing 0-0 at the Madejski Stadium last Saturday the sides must replay to decide who will face Wimbledon in the Fourth Round.
The replay has been scheduled for Tuesday 14th January and will kick off at 8pm.
Tickets have already gone on sale and are priced at £13 for adults, £8 for concessions and £10 for diabled tickets if purchased in advance.
However, should you wish to wait until matchday to get hold of your tickets you will have to pay £15 for an adults ticket, £10 for concessions and £13 for a disabled ticket.
Season ticket holders have until Thursday to purchase their seats, or they will have to sit elsewhere.