Klopp may have peaked with Dortmund, they're miles behind Bayern in the Bundesliga, he's done a great job. I think Van Gaal is a better fit, but Spurs will be gutted because he's just the sort of coach that could talk Eriksen into staying.
There are too many journalists close to this story saying this is nailed on already for it not to happen.
They need a big name, someone who can spend £150 million and not piss it up the wall. Klopp or Van Gaal is my guess.