I want to believe it should help. If Ashley had any common sense, he'd realise that this is the best offer he's likely to get for the club. If we continue down this path, get relegated and lose Rafa, we'll be fucked for a long time and he might never get a return on his money.
Sadly, Mike Ashley doesn't seem to make common sense decisions. It is he, not what happens on the pitch, that will hinder the deal.