I still think it's a bit odd to describe someone putting money in and not wanting it back as investment. What we're looking for is a patron, someone who will pick up the tab for ground improvements, infrastructure, even wages etc.
The problem is that if they're not already a supporter, what would motivate someone to put money into the club? Usually, I'd imagine, it would be for ego reasons. They like to be in charge, have people shaking their hand etc. The difficulty with this is that it doesn't really sit well with how the club is run at the moment.
Ideally we'd want someone willing to put their hand in their pocket and then just sit back while the club gets on with it. I don't think there are many of these type of people around though...