The Daily Mail is reporting that an American billionaire is poised to take over Charlton with negotiations at an advanced stage after he and his associates came over for the Leeds game: Josh Harris
Josh Harris already owns sports franchises in terms of ice hockey team New Jersey Devils and a basketball team, the Philadelphia 76ers. He spent £500m on their acquisition so the Charlton asking price should be affordable.
I have no independent evidence of the veracity of this report. What I do understand is that the original stories in the South London Press were a plant from a relatively reliable source. They, of course, referred to a property company, but the intention may have been to put pressure on another bidder.