the max you can give your club is in refrence to its reputation, your see it in the editor after morale under details, i.e if its at 1000 in the editore the max your be able to have is sumit like 1m in the bank, if its at 0, your lucky to get 8-10k.
Dont cheat too much though, i did it once and got bored within 3 game months. Set repuation in accordence to the people in your league, and then give yourself some dosh
if you did set your repuation higher than 0 then make sure you made the club 'proffesional' not amatuer or semi pro.
Hope this helps Matie.