This is a good read on Pochettino. What he did at Espanyol is much more impressive than it looks on the su
http://cartilagefreecaptain.sbnatlion.com/2014/5/13/5713048/mauricio-pochettino-tottenham-hotspur-manager
I remember listening to an interview with Greg Stobart who writes for Goal about Spurs in February or March. This was when it still looked like LVG was going to come in and there was a discussion about Dutch players that might come in. The interviewer suggested perhaps Kevin Strootman would be the perfect answer to our midfield issues. What Greg said which I thought was very smart was that if we want a guy like Strootman we need to buy him when he's leaving PSV, not after he's proved himself to be a big time player at Roma. That is simply the reality of being a club of our size and in our financial situation, we need to buy players on their potential to take a step up rather than ones who have already proved it. For example: Berbatov, Modric, Carrick, Eriksen, and Vertonghen. These are guys that looked primed to take the next step and have. We need to identify and scout well and buy at a tier lower than some of the clubs we are competing with just because of our size.
Why I bring this up is because it is the same with managers. We've been linked to the likes of Ancellotti, Klopp, Simeone, Mourinho (two years ago) etc but we all know that's nonsense. Instead what we need to be doing is finding the next Ancellotti, Klopp, or Simeone. That's where the club needs to be smart in their studies, fact-finding, and interviewing. They need to identify who is the next big thing. That may require us to take a punt on Pochettino, De Boer, or Tuchel.
That's why the LVG scenario was so tantalizing because he was a manager with a history that actually matched our ambition. But ultimately our financial size is much lower than our footballing ambition and that puts us in a spot where we lack the ability to attract a coach that has proved it at the level we would feel comfortable.
In the end, it is extremely unlikely that our manager will have an unassailable resume. I could pick holes through Pochettino, Benitez, FDB, Tuchel, Moyes etc etc. Our ambition outweighs our pull for the most part. We just have to hope that the club has found it's homework and they select someone who they believe is a good fit at the club both tactically and personality wise.
There is no sure fire blueprint for success. We just have to hope we find the next big thing. We've done it with players, now it is time to do it with a manager.