The 42-year-old Spaniard was previously embroiled in an intense rivalry with the Portuguese while in charge of Barcelona between 2008 and 2012, but will end his sabbatical in the summer when he succeeds Jupp Heynckes.
But in an interview with Rai Sport, the Real Madrid boss insisted that Guardiola's switch to Germany does not concern him, and neither does he intend to ever follow in his former opponent's footsteps.
"I have no comment to make, everyone is entitled to their choice," said Mourinho.
"Has he deliberately chosen a league I am not involved in? I don't know. What is certain is that I will not manage in Germany.
"I have nothing to say on the matter, it is all the same to me."