I had a stab at answering this before. In 2018, London's O2 Arena was reportedly making a profit of GBP 150 million. You might expect one on the Etihad Campus to make a bit less, but it should still be a lucrative venture. However, the bottom line is that a poster -
@jrb I think - went to the roadshow and was told that it's being paid for by Oak View and they'll therefore presumably keep the revenues. It's possible that some revenue will find its way to City but it won't be game-changing sums. The big value of it to MCFC is that it makes the rest of the spare land on the Campus much more attractive for development and you could possibly be talking then about it generating transformative amounts of cash.
Below is part of an analysis I wrote back on page 331 of this thread around 4 months ago:
City (or rather the MCFC/MCC joint-venture company) will be supplying the land on which the facility will be built and will be responsible for maintaining the entire surrounding area, as well as operating (or overseeing the operation of) other facilities on the Campus, including those yet to be built. There may also be scope for MCFC/ADUG to provide some assistance in procuring events for an arena, too; OVG don't especially need assistance, but I doubt they'd be likely to turn it down.
Bit of a hostage to fortune to speculate on exactly how it will work given the limited information we have so far, so I won't try in any detail. However, I'll make the following general points: (1) there'll be contractual undertakings with respect to the above and some money will flow to MCFC for the performance of the above obligations; (2) the amount is unlikely to be game-changing in terms of the club's income, but it's not fanciful to suggest that it could cover the annual salary of an established member of the senior squad - in other words, well worth having; and (3) it should be possible to structure matters in such a way that's acceptable to OVG while any income of MCFC counts for FFP purposes under the current rules.
The big deal about the OVG plans, though, is that if they go ahead, it will unlock the development of the rest of the site. Once you have a world-class anchor, and OVG genuinely is, then other leisure operators of ancillary facilities are much more likely to commit to the collar site as a venue as well. Again, much depends on how they work it and we're in the realms of absolute conjecture here (so please note the following choice of words), but it's possible that the revenue for MCFC could be rather significant.