Hertha Berlin coach Pai Dardai is upbeat over their prospects of keeping Marvin Plattenhardt today.
Hertha are willing to sell €25m.
But Dardai is hopeful of keeping Plattenhardt and said: "I assumed that he stays the whole time. He feels comfortable here, we'd like to work with him."
If no Premier League deal can be done, then the left-back will remain with Hertha for the season.