Last season, Fort played very little. He wasn't even called up by the team's coach, Hansi Flick, for a friendly match against Vissel Kobe.
Fort faces strong competition for his position, and it's unlikely he'll get to play regularly. This is why his departure, whether through a loan or a permanent transfer, is considered certain.
Several clubs have already shown interest in Fort, including Real Mallorca. Now that Barcelona has confirmed Fort's availability, more clubs are expected to make their offers known.