Beside the obvious thing that Sadomin said, its not just related to that alone ,becauser Robert Pires talked french at all times more or less and said he doesnt care about talking english (not about not staying etc, but saying he has no use for it

). Can that kind of arrogance too, hehe.
But its defenitely the former with Diego (sees Germany as a stepping stone), and he probably knows Italian already, so he wont need to integrate much when he comes to Italy. Not that portuguese speakers find italian quite easy enough already, to say the least.