Mourinho biggest challenge post Porto if Levy doesn’t open his wallet. However, I am sure levy will start spending. Mourinho can not succeed unless he does. If Levy restricts Mourinho same way, he restricted Poch, he will not win a trophy. However, if Spurs is near the top of the spending chart, he will win a domestic trophy.
I feel he will do well with Spurs as they have an aging team. It will suits Mourinho philosophy. However, like Mourinho previous club, this will most likely be a short term project.