JAKARTA, April 18 (Reuters) - Indonesian nickel company PT Merdeka Battery Material is discussing the structure of its partnership with European automaker Volkswagen, a top Merdeka executive said.

The Indonesian company's chief executive, Devin Ridwan, said on Tuesday there is no concrete agreement yet. (Reporting by Bernadette Christina Munthe Writing by Fransiska Nangoy Editing by Kanupriya Kapoor)