Touch wood wouldn't go as far as a decade or two. The approach we have now- trying to stay in the PL without a transfer budget- is scary, but if we do pull it off then in 3 or 4 years time not only will we have the revenue from the stadium, but with all the belt-tightening will have one of the best FFP positions in the league as other clubs are all going mad right now. That's a strong position to be in and also would make us a prime target for a big money takeover.
The problem of course is surviving those 3 or 4 years.