Les Parisiens travelled to Saudi Arabia to defeat a Riyadh All-Star XI in a 5-4 thriller on Thursday, where Nordi Mukiele, Marco Verratti and Lucas Lavallee all missed out due to injury.
None of the trio should be back in time for this one, where Galtier could elect to name third-choice goalkeeper Sergio Rico in between the posts after Keylor Navas played in Riyadh.
An experienced head in Marquinhos may still be required at the back alongside Juan Bernat, who was sent off against the Riyadh All Stars but should keep his place as Nuno Mendes builds up his fitness.
El Chadaille Bitshiabu and Timothee Pembele can expect to provide a youthful presence in the rearguard, and the same goes for Ismael Gharbi and Arsenal-linked 16-year-old Warren Zaire-Emery in the middle.
Renato Sanches should also be in line for a rare start as he aims to put his injury woes behind him, while Carlos Soler could start in the number 10 role following Pablo Sarabia's exit for Wolverhampton Wanderers.
With none of Lionel Messi, Neymar or Kylian Mbappe expected to start, a youthful strikeforce ought to see Hugo Ekitike joined in the final third by 17-year-old Ilyes Housni.
PSG possible starting lineup: Rico; Pembele, Marquinhos, Bitshiabu, Bernat; Zaire-Emery, Sanches, Gharbi; Soler; Ekitike, Housni