English Patch Full |best| - Captain Tsubasa Eikou No Kiseki

The translation team has explicitly stated that this is a "final release" but open to bug fixes. You can follow their progress on the Discord server. There is even talk of an HD texture pack to upscale the sprites to 4K.

A detailed walkthrough of the game's menus and team creation (which is in Japanese) is available from Projets Shinji . The guide covers: Team Creation: captain tsubasa eikou no kiseki english patch full

Obtain a clean, Japanese Captain Tsubasa: Eikou no Kiseki GBA ROM. The translation team has explicitly stated that this