Usually found in C:\Program Files (x86)\Origin Games\FIFA 17 .
Copy the contents (often labeled as 00 or 08 folders) into the corresponding subfolders: FIFA 17\Data\Win32\superbundlelayout\fifa_installpackage_xx .
Upon launching FIFA 17, a screen with various flags typically appears. Selecting the UK/USA flag will set the menus and interface to English.
Switch to UK site
Switch to US site