This is probably my most bold prediction of them all, but it seems far less bold when you look at one man.
That man is Dutchman Guus Hiddink, currently the manager of Turkey's national team. Idolized in South Korea and pretty much every other country he's managed, the manager has an incredible record on the international stage.
His legend started in 1998 when he managed a Dutch team into the semifinals, beating Argentina on the way and making his name known to all.
Then in 2002, he gave an incredible performance as manager of co-hosts South Korea. Not only did he take them to the semifinals, which was far better than everyone expected, but he also revolutionized the Korean team into the powerhouse it is today. With the help of some (shall I say questionable?) refereeing decisions, the Koreans truly shocked the world, making Guus a national hero.
He could have done a repeat performance in 2006 with the Australians, but he went out in the second round thanks to a last minute (again, shall I say questionable?) penalty against eventual winners Italy.
In Euro 2008, he defeated his Dutch countrymen with Russia and made stars of Roman Pavlyuchenko and Andriy Arshavin, reaching the semifinals in the process.
Who says he can't do it again?