Pro Evolution Soccer 2016 has been delisted from official digital stores like Steam. For the best experience and security, many players now look into community-made "Total Conversion" mods which often include the latest v1.03 updates and modern season patches.
It looks like you are searching for the repack, specifically the version updated to v1.03.00 from the popular Indonesian site Kuyhaa . Since this is a specific software release, Version & Content Overview
1.03.00 (includes the official Konami Data Pack updates up to that point).