France head coach Didier Deschamps confirmed Karim Benzema suffered a "knock" that will require further assessment after the world champions finalised their Euro 2020 preparations.
Benzema was withdrawn during the first half of France's 3-0 victory over Bulgaria, having fallen awkwardly after challenging for a header in the pre-Euros warm-up fixture on Tuesday.
With France's opening game at the rescheduled European Championship just a week away – against Germany on June 15 – the sight of Benzema limping from the field represents a major worry for France.
But Deschamps gave little away in his assessment of the blow, telling TF1: "It's a knock on the knee, which also affects the muscle. He felt he was getting stiff so he asked to be subbed.
"The medical staff are taking care of him."
The good news for France is that they have a ready-made replacement for Benzema in Olivier Giroud, who led the line during their victorious 2018 World Cup campaign.
Giroud netted the 45th and 46th goals of his international career late in the second half to move within five of all-time top scorer Thierry Henry's 51 – all despite Deschamps not expecting to use him much against Bulgaria.
"Taking into account the situation in which he arrived, psychologically and especially physically, I had planned to bring him in for less time," Deschamps added.
"He's still a scorer, with a foolproof mind. I'm not going to complain, and the squad will need it too. We will need all our strength. He is part of it too, [that's] good for him and the France team.
"I think he has played more tonight than the last three months combined."