I really can't see the club having let it get this far without finance in place. They know the deadlines, and have for months. While there was no point in announcing financing was secured before all the permissions etc were granted, neither would there be any point risking the wait for investment to magically appear on time, or go through the last two months of final arangements re planning, land etc, without at least having agreed all the loans required etc, with the banks.
It'll not be investment, that'll come later, but you can be sure the bank loans etc have all been arranged etc for months.
Also, I'd imagine this is the week that the Post, in particular, will go into complete overdrive with their last attempts of getting their precious groundshare, and with shit stirring articles every day of how the club have no money, have missed deadlines etc....
On the investment front, I actually think the club have been clever to wait - Come thursday, once everything is in place, the club, complete with fully funded and on it's way stadium, and a great squad and manager in place, will be a much more attractive proposition for investors.
Also, sponsorship deals etc for the new stadium can now start being made, which will, given previous precedents, offset about 50% of the stadium cost, and leave the club in as little as £100m debt - something (before everyone panics) easily offset by the additional earnings made by the stadium - indeed, the additional earnings will pay for the stadium, AND add about £10m a year to the transfer budget, and that's BEFORE any investment is even secured.
After thursday, any investor will be looking at not a side making a small loss, but one which will be guaranteed a profitable future...