According to Rubén Martín, a reporter from Ashes, Mbappe continued to be absent from Salzburg due to his illness and is still recovering.
The reporter wrote: "Because of gastroenteritis before, Mbappe will not play against Salzburg."
"The French player has lost about 4 kilograms and is currently undergoing special training to recover. The recovery is progressing well, and the team hopes that he can come back as soon as possible."
Real Madrid has announced the roster against Salzburg, and Mbappe is not selected.