Lets just focus on funding. If, I'm sure GF can give us figures, the current running costs are £1 million per year which DH puts in and the stated commitment from the trust is to 'secure an income stream that doesn't require disproportionate topping up by an individual.' On that basis lets go with 60;40.
Where and how will the trust raise £400k per annum?
You can't come out with a commitment(which will be legally binding potentially) without a business plan that underpins it. We're talking about professional sport in London not a pub soccer team in the west Yorkshire village league.
My hand wont be going up thats for sure.