I understand, managing this for you has got to be really, really delicate.
There's potential downsides in doing nothing as well.
I'd still say it is worth having a word with someone more senior if you are able to. He'll likely lose his job, which is a horrible thing to have on your conscience - but if your sale goes through anyway, and he championed it - you could still end up on the hook. You'll either get tarred with his brush, or outright investigated for colluding with him, which may or may not be a crime where you are.
On the basis that you've written off the sale mentally, talking becomes an upside. It gives you another chance at making the sale on fair terms, and establishes your trustworthiness.
There's potential downsides in doing nothing as well.
I'd still say it is worth having a word with someone more senior if you are able to. He'll likely lose his job, which is a horrible thing to have on your conscience - but if your sale goes through anyway, and he championed it - you could still end up on the hook. You'll either get tarred with his brush, or outright investigated for colluding with him, which may or may not be a crime where you are.
On the basis that you've written off the sale mentally, talking becomes an upside. It gives you another chance at making the sale on fair terms, and establishes your trustworthiness.
I don't envy you though, horrible situation.