The 19-year-old suffered an injury to his left ankle after a challenge from Adil Rami in training, France have been dealt a World Cup worry after Kylian Mbappe limped out of training on Tuesday.
The PSG wonderkid has been in impressive form for Les Bleus during their warm up matches.
He scored as Didier Deschamps’ side underwhelmed in the 1-1 draw with USA over the weekend and has looked set to start as part of a front trio when the finals get underway.
But the 19-year-old sensation suffered an ankle injury after a challenge from Adil Rami, as France continued their preparations in Russia.
Mbappe went down after a challenge from Rami, clutching his left ankle. Mappe underwent treatment from medics on the field, before leaving the session and heading back into the locker room, while his teammates continued with the session. France open up their bid to win a second World Cup when they face Australia in Kazan on Saturday.