The midfielder is struggling with discomfort in his left leg and, according to EFE sources at the club, although it is not ruled out that he will take part in the last training session before the Champions League, this will depend on his progress over the next few hours.
He is a doubt for a match in which Carlo Ancelotti has confirmed the absence of Dani Carvajal and Eder Militao, both with knee injuries; Eduardo Camavinga, with a femoral biceps injury in his left leg; and Lucas Vazquez, due to yellow cards.
The Italian is without any first-team right-backs for Salzburg, with only two centre-backs - Antonio Rüdiger and Raúl Asencio, who is a reserve team player - as David Alaba has yet to make a competitive appearance and there is doubt as to whether Tchouaméni, who can play in that position, will make it to the game.