Not the responsibility of the fans.
The owner should a ) lower his asking price to a realistic, market value level; and b ) employ professionals from the world of finance (in the same way Liverpool did, and Manchester City) to find a potential buyer(s) of good character, background check them, check they have the money and means, check they don't live in one bedroom flats in Manchester and claim to previously work for ICI, you know, that sort of thing.
A fans pressure group which has made numerous, perfect valid suggestions that the club continues to not only not heed, but actively ignore, issue banning orders/ultimatums such as this one, and attempt to libel groups with claims made on national radio last night.