It will be a tricky period to navigate financially. But if there's one thing we trust Levy to do, it is to balance the books and keep us in the black. I know that he has concocted some multi-million £'s deal with the NFL whereby our ground will be used for 2 NFL showcase matches per year over 10 years, in exchange for a massive increase in our publicity and market reach in the States, and some major sponsorship deals on the side.
Just did a quick search and it is interesting that our total net spend since the PL began is significantly lower than your own (around £60million). This, combined with the fact that your wage structure is (with the greatest respect) somewhat insane, and I think we are better positioned to cope with the stadium burden than you were.
To be quite honest, I don't think a single Spurs fan could care less if we stopped spending big bucks for a few years anyway. Almost every player we've ever signed over £15m has turned out to be utterly ****e, so why bother? Soldado, Paulinho, Janssen, Sissoko, Bentley, Bent...the list is painful. Our biggest success stories in the market have undoubtedly been the 'budget range' of players: Alli, Toby, Wanyama, Vertonghen, Dier, Davies, Eriksen, VDV, Walker, Rose, Bale, Berbatov, Lennon, Assou-Ekkoto, Adebayor

...bloody hell that's just off the top of my head. All players cost under £12m and you're basically looking at a list of some of our top performers in PL history.
The bottom line is, without the unlimited oil money of City/Chelsea/United, the key is to spend carefully and wisely. Aside from Modric, I can't think of a single 'big bucks' signing who we could instantly see would improve the team. The likes of Dembele and Lamela have taken
years to justify their price tags. Ultimately, all clues point to the fact that we aren't very good at splashing the cash, yet excel at spending prudently and wisely.