Despite his youth, Mbappe flew to Russian Federation on Monday as one of the tournament's most recognisable figures and was expected to play a key role in France's bid to win their second World Cup.
If Mbappe is unfit to compete in Russia, Deschamps will have until 24 hours before Les Bleus' opening fixture to replace him in his 23-man squad and could call on Alexandre Lacazette or Anthony Martial from his reserve list to step in.
The French squad arrived in Russian Federation on Monday, with their first game taking place against Australia on Saturday.
Kylian Mbappe has eased fears he suffered a serious injury just two days before the start of the 2018 World Cup.
Four days before his World Cup debut, Kylian Mbappe left France's training session limping, after a clash with Adil Rami.
But the 19-year-old sensation has provided a promising update and also sent a reassuring message to Rami. The forward exploded on to the scene the following season, helping to fire AS Monaco to the Ligue 1 title. A move to Paris Saint-Germain followed during last summer, with PSG agreeing on a loan deal with a view to making the move permanent.
France has been drawn against Peru, Australia and Denmark in the group stage matches, which will be crucial for their advancement to the knockout stage.
James Wan Producing An Arachnophobia Remake
Steven Spielberg's Amblin Entertainment, which made the original, is behind it, with James Wan set to produce. Wan, who's now helming Aquaman , will produce the remake through his Atomic Monster banner.
Steven Gerrard's latest Rangers signing has been confirmed
It comes within hours of Brighton's Anthony Knockaert seemingly let the cat out of the bag over another imminent Rangers signing. RANGERS are in discussions to sign Croatian defender Nikola Katic as Steven Gerrard continues his squad rebuild this summer.
Julio Jones Won't Attend Falcons' Mandatory Minicamp
Jones has been with the team since they traded up to draft him in 2011, and he signed an extension three years ago. He'll face maximum fines of $14,070, $28,140, and $42,215 for missing mandatory minicamp Tuesday through Thursday.
E3 2018: New Last Of Us 2 Details Revealed
Regarding the game's advancements overall, Druckmann said the environments are "broader, more complex, and more detailed". It took place in a dance hall that looked like the hall in which the actual E3 2018 Sony briefing was held.