Author: BBC Sport
Kylian Mbappe starts for Paris St-Germain after being left on the substitutes bench at the weekend to rest an injured ankle.
Exciting 17-year-old midfielder Warren Zaire-Emery also starts along with Portugal midfielder Vitinha, who was on loan at Wolves in 2020-21.
Paris St Germain XI: Donnarumma, Hakimi, Pereira, Marquinhos, Beraldo, Zaire- Emery, Fabian, Vitinha, Dembele, Mbappe, Barcola.
Substitutes: Navas, Ugarte, Goncalo Ramos,
Asensio, Hernandez, Muani, Mukiele, Carlos Soler, Ethan Mbappe,
Mayulu, Tenas.
Real Sociedad, who are enjoying their first season back in the Champions League since 2013-14, are without defender Kieran Tierney, who is on loan from Arsenal.
Tierney misses this match because of injury but former Newcastle midfielder Mikel Merino does start.
The Basques also feature Brais Mendez, who scored three times in the group stage.
Real Sociedad XI: Remiro, Traore, Zubeldia, Le Normand, Galan,
Mendez, Zubimendi, Merino, Kubo, Andre Silva, Barrenetxea.
Substitutes:
Zakharyan, Marrero, Gonzalez, Olasagasti, Umar, Pacheco,
Turrientes, Magunacelaya, Marin, Fraga, Aramburu.