Gregg sold Apollo Leisure to the Americans for £130 million, so he had the money. He never had any interest in football, but he does like making money, so he offered to lend the money to the club. However, it's all smoke and mirrors, as Liverpool City Council had no intention of letting Everton have the Kings Dock site. And considering how well the arena and conference centre have done it has worked much better for the city this way.
Meanwhile, Everton need a new Managing Director, a new Commercial Director, and a new Director of Communications. They would be much better spending millions on these 3 positions than on buying a new player or two.