Of course, he already had the job a decade ago and botched it up, not even getting to the 2002 World Cup.
I did not follow that so much 10 years ago - oh, yes, the jokes in Germany... - but not why that happened.
I think he is a real great coach - but he is the one that rules and at least on club sides he really cleans up the team. Who does not play his game is gone. And he wants discipline. He might not be the nicest - he told e.g. Gomez and Tymoschtuschuk at the beginning of their times at Munich that they are not his buys and that he would not have bought them - but he gave players more chances if they showed ambition than his successor who powders a couple of players and talks a lot about the talents of the rest but never gave chances. I like the first method more. The appreciated players that worked hard and this like e.g. Robben, Schweinsteiger, Müller etc. - never had any problems with him and still talk very well about him.
But at Bayern the problem was that this club only has one king - Hoeness. Rummenigge and all of the others will do everything what he wants. And van Gaal and Hoeness... - that just did not function...
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Bondscoach = coach of the Elftal (the national team of the Netherlands)
you know that bundle of egoists around RvP, Sneijder, Robben, van der Vaart...