Mbappé scored the only goal of France's opening Group A fixture against Turkiye, but then limped off with a knee problem. The diagnosis is a hyperextension of the posterior capsule in the left knee, which is expected to keep him out for at least 10-12 days. This makes it unlikely that he will make a full recovery in time for October 14, when Real Madrid visit Roma in the Champions League.
Mbappé's injury has significant implications for the France squad, as he was a key player in their opening match. The Azzurri will visit Paris on Friday October 2 to continue the tournament, having lost the opener 2-0 at home to Belgium. With Mbappé out, France will need to rely on other players to fill the gap.
The extent of Mbappé's injury is still unclear, but it is entirely possible that he could miss the second Nations League showdown with Italy on November 12 as well.