Real Madrid are reportedly worried that Thibaut Courtois could miss up to a month of action after suffering an injury on international duty.
Courtois, 30, picked up a knock during Belgium's 3-0 win over Sweden on Friday in the opening game of their Euro 2024 qualifying campaign.
The Real Madrid stopper managed to play the full 90 minutes in what was the first game of the Domenico Tedesco-era as the Red Devils look to begin a new cycle following their disastrous World Cup campaign.
But Courtois left the national team camp on Sunday in a precautionary move after straining an adductor muscle, according to the Belgian FA.