The center-forward of the Blues had scored, in additional time, the goal of victory for PSG, in the first leg (1-0), on February 15.
Contacted by AFP, Paris SG did not respond Monday in the middle of the afternoon.
The Parisian superstar's possible withdrawal would upset the preparation of the match for the capital club, depending on the exploits of "Kyky", both his best scorer and his best assistor this season.
Without the suspended world champion, the Parisians lost to Nice in Ligue 1 (1-0) on Saturday.
"There is a PSG with Kylian and another without Kylian," admitted Nice coach Christophe Galtier after the meeting.
PSG is counting on Mbappé to achieve its goal of winning the C1 at the end of May, with the final to be played at the Stade de France in Saint-Denis in the Paris suburbs, almost at home.
"Kyky", too, is aiming for European apotheosis, especially since he could leave the club next summer, his contract expiring at the end of June.
Real Madrid appears to be the club best placed to welcome the striker if no extension agreement is reached by then between Mbappé and PSG, who still hope to convince him to stay.
© 2022 AFP