I read it when the contract was announced, and didn't note down the link at the time.
It isn't important enough to me to spend the time googling for it, but it must be out there somewhere.
The caterers pay the albion £× million in advance for the catering contract.
The caterers take all the proceeds up to a threshold of £y million.
Above £y million, then the albion get a further share of the profits.
We obviously do not know if the caterers have hit the £y million threshold at...