The acquisition of the club wll be undertaken by a limited liability company established specifically for the purpose. Individuals will provide equity and the company may also take on debt to finance the acquisition. Assuming your question relates to the UK the following link provides a short note on lenders taking security:
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Cashflow from the club will be used to sevice debt.
There are other potential aspects to the structure, such as equity being provided via a holding company of the acquiring company to structurally subordinate the claims of equity-holder to those of lenders or a debt push-down for tax purposes, but the idea is essentially as above.