No, Leicester is not the next United. You can have one offs. I never said Klopp was the next SAF. But to say he did nothing of note for 3 years is ignorant at best. He gradually improved the team, and have now stabilized it as one of Europe's top sides.
Klopp is not looking to stay in one place for 20 years, and for that reason alone, I don't think he can ever be a SAF incarnated. He can still be a world class manager though, and again, to say he did nothing of note in Liverpool for the first 3 years is simply incorrect.