I'm not sure I'd trust City to run a ballot and I suspect you might not either. United run a ballot for away tickets and they publish the percentage of tickets available to the three ballot categories. Typically 10% of the tickets are allocated to Corporate, around 83% to ordinary season ticket holders and the rest to others, including disabled, players, staff, etc. So if there are 3,000 tickets, about 200 go to players, staff, disabled, etc while 300 go into the corporate ballot and 2,500 into the general ballot.They usually have between 2 and 4 applications per ticket.