The Croatia international is available from Eintracht for a price of €30m, says BILD. Sevilla have offered €21m, which was rejected by the Germans.
With 48 hours to run before the Premier League transfer deadline falls, Rebic is eager to hear about a move to England in the next two days.
Meanwhile, Eintracht coach Adi Hutter remains hopeful of Rebic staying.
"It would be an absolute top signal if we manage to keep him. It would be a strong sign to everyone," he said.