Speaking on Dutch TV show De Avondetappe, Koeman hinted that his days of managing clubs are behind him.
"It's not definitive, but the chances of me coaching a club again are very slim," he said.
The ex-Barca boss explained that he enjoys coaching national teams more and prefers the environment around the Dutch squad.
"Everyone comes with a smile. Everyone is happy to see each other again and to be able to speak Dutch again."
The drama of dealing with disappointed players is another factor he doesn't miss, adding: "You don't want to focus on that, because you want to focus on the football aspect."