Since official servers for PES 2017 are largely offline or restricted, users often look for "Data Packs" or "Option Files" on modding forums (such as PESPatch, PES Modding, or SmokePatch forums).
This specific file usually relates to (the eng part) packaged as a CPK archive (the standard file format for PES game data). Users typically look for this file when their game is missing English audio (playing with silent commentary or wrong language) or when they are trying to install a specific patch.
Avoid generic "direct download" links from untrusted ad-farm websites. Instead, look for community-verified sources.
: Go to your PES 2017 installation directory (e.g., Pro Evolution Soccer 2017\download ).