Exchange and return of tickets are generally excluded (see ticket terms and conditions). Tickets can therefore not be returned. We therefore ask you to resell via our ticket resale. Please see the "What do I do with my tickets if I can't go to a match?" question to find our more information about this. 
 
If your ticket is resold, payment will be made within 14 working days of the resale to the bank details stored in your user account.