The other thing is if they were not happy with the contract when they took it over in 2011 why did they sign it?
That is the only relevant question in my eyes. The club could promise 11,000 sell-outs every game with everybody attending buying 2 items each but the supplier would still be at fault. It is THEIR responsibility to carry out adequate due diligence to ensure the contract would be profitable and to remove their exposure to risk. It is more likely they simply took over an existing proposal before realising what sort of revenue is actually realistic at this level. I remember when they took over we were promised all sorts and the deal sounded too good to be true. Clearly now it was but I can't see how anyone other than Centreplate are at fault here.
