Not necessarily. We don't know the detail. Did Short actually want to leave us debt free so he took the SBC loan, and then wanted his price of £40m which he expected Donald to pay himself? Short would then use some of that sale to satisfy the SBC debt that he took on, and he'd think that the club was debt free, with a £25m parachute payment to come in and generally in a great position.
Or was the agreement always that the club money would be used to pay that club debt (Short would wipe all the other hundred and odd million but not that bit) and he only wanted £15m from Donald.
We don't know is the short answer. But when Donald came in he explicitly said he was paying £40m and that Short just had security over the parachute payments so that if Donald didn't pay him (the £40m), Short could take those payments in lieu but not to worry because that wouldn't happen. That is exactly how you'd imagine the first scenario would work, because Donald wouldn't have £40m cash so Short would need a form of security. The fact Donald so specifically said that's what it was for, and the fact he has since mentioned the the money will be paid back as needed, suggests to me that the first option was what was meant to happen.
Donald has also said that he wouldn't feel bad about "keeping" the parachute payments if he had to sell up before he wanted to, and that the intention was always to invest "up to" the £40m.
Is not beyond the realms of possibility that initially he intended to pay the full £40m because he thought he'd get us up and sell for a profit. As that became less likely he realised that there wasn't a legal obligation to do so, so he could just avoid doing it (and if he's being decent he'd deduct it from whatever he gets when he sells ). But now with cash flow obviously an issue, we really need that money in safc , not "resting" for want of a better term with Donald