If you can get to the league stage of the European competitions the money starts to flow in. That would be the best way to finance a new stadium and obviously, per your post, give more money to attract better players.
having said that, I think JBA has demonstrated that spending lots of Money on players doesn’t guarantee a better team. Having the right coach and the right mix of players can go a long way to achieving success on a smaller budget. Of course, having that plus a lot more money wouldn’t be a bad thing. Would we then start to become a possible investment opportunity or maybe more the case of not requiring outside investors?