The primary source for the PES 17 version is the BeboFacemaker Blog.
Modding is generally only available for the PC version of the game; consoles (PS4/PS5) typically only support "Option Files" which update kits and names, but not custom 3D face models.
: Check the box for the Chalobah face CPK and click Generate DpFileList.bin .
: Place the .cpk file into your game's download folder. Generate DpFileList : Open the DpFileList Generator tool.
: Drag and drop the folder containing the player ID into the faces directory.
: Open your PES 2021 installation directory and navigate to the sider folder, then livecpk > faces .