That's according to BILD's chief of sport, Christian Falk.
He told lfctransferroom: “Marko Grujic's first season at Hertha was outstanding, they would have preferred to sign him but had no money. Also, Grujic always saw himself as a Liverpool player in the long run.
"In his second year on loan, Marko suffered due to the many changes of coaches, and has no form at all. Hertha would like to see him find his old form. For now, they are interested. Grujic himself wants to go back to England unless he receives a clear signal from Klopp that he doesn't want him."