Use a file manager (like ZArchiver) to extract the OBB zip. You will see a folder typically named com.ea.game.fifa14_row (or similar).
: The "Opaque Binary Blob" containing the core graphics and game data. fifa 17 apk obb download for android ristechy verified
If you choose to proceed despite the risks, here is how users typically install it: Use a file manager (like ZArchiver) to extract the OBB zip