United Slavic Championship allows 64 clubs from 16 leagues to start in totally new competition with group phase and knockout rounds.
Four best teams from each league from mentioned below countries automatically qualify to Unified Slavic Championships.
Poland, Romania, Slovakia, Russia, Ukraine, Czech, Belarus, Bulgaria, Serbia, Croatia, Slovenia, Bosnia & Herzegovina, Montenegro, North Macedonia, Kosovo, Lithuania.
How to install?
Put the "United Slavic Championship.fmf" file in: "Sports Interactive\Football Manager 2020\editor data"
It works perfectly with Football Manager 20.4 update.