City won't pay anywhere near 1 billion quid under the lease. The club has an option to buy the lease with rent already paid being set off against the purchase price.
That hasn't happened so far, because the money would go to Sport England. However, that stipulation ceases after a set period, which I believe is 25 years but the information isn't in the public domain. As I've posted on here before, the source for this information is David Bernstein at a meeting in Portcullis House, Westminster in January 2003.
You'll probably see the club buy out the lease after the deadline for paying Sport England expires. I suspect we may well transfer the lease to the ownership of the JV owned by the Council and the club in line with other land in and around the Campus, but let's see on that.
These figures aren't right, I'm afraid. I'm about to disappear for the evening but will look out the correct ones tomorrow morning. However, I can say for a start that COMS cost GBP 130 million, with Sport England paying an extra GBP 20 million to cover cost overruns before the Games.
Moreover, David Conn reported back in the day, and I think he's right, that the current annual rent is GBP 4 million. That includes a payment of GBP 1 million for the right to dispose of stadium naming rights. And I don't know why you think it should be measured how much of MCC's contribution the club has paid back but lottery funding ignored. I personally disagree, anyway.
From memory, but subject to subsequent clarification, City have currently paid about GBP 80 million of the GBP 130 million total cost of the stadium. When we end up owning it, we'll have more than paid the construction and conversion costs, unlike that catastrophe at West Ham, which has been and remains a huge drain on the public purse.