Any administrator would look into the whole circumstances which led to the insolvency. Much would revolve around the clauses in the deal with Short, none of which are public. If, as has been claimed, £25m of the parachute was earmarked for the payment of the residual loan moved by Short, it's difficult to conclude that that movement created an inter-company balance that was legally enforceable. As cash has come in from Madrox after the writeoff, that would establish an argument from Madrox that the writeoff was being mitigated. The administrator would need to be certain that the actions of the directors were a) reckless and b) were the direct cause of the insolvency. It's more likely that an administrator would conclude that the direct cause of insolvency was the impact of Covid.
In reality, SAFC Ltd would not enter administration alone. All companies in the group, including Madrox, would enter administration. In that context, the administrators would look at the Madrox group as a whole, and the intercompany elements would simply be ignored. So far as the loan payment to Short is concerned, I'd be pretty sure that they'd regard this, in substance terms, as club money paying a club debt.