In the trial against the Cologne singer Hozan Cane, the judgment of a court in Edirne in western Turkey is expected on Monday.
The 58-year-old is accused of supporting terrorism in Turkey.
According to her lawyer, the singer faces a prison sentence of five to ten years.
Cane is now back in Germany and does not take part in the negotiation.
Istanbul / Cologne - The indictment is based, among other things, on content from Facebook and Twitter profiles.
Hozan Cane (stage name) was arrested in Edirne shortly before the presidential and parliamentary elections in June 2018 and had served more than two years in prison.
She was then banned from leaving the country, which was lifted in July.
Cane has Kurdish roots and only has German citizenship.
dpa