Norway captain Martin Ødegaard injured an ankle on Monday ahead of a key series of games for his club Arsenal.
Ødegaard covered his face with his hands while being treated on the field midway through the second half of a 2-1 Nations League win over Austria.
He appeared to turn awkwardly on his left ankle in a tough challenge with Austria midfielder Christoph Baumgartner as both chased and stretched for a loose ball.
Ødegaard limped out of the game two minutes later and was consoled by his teammate Erling Haaland.