The 29-year-old is on loan at the Bundesliga side until the end of the season, but Hertha are eager to keep him at the club.
“Yes, we have now talked for the first time,” Voronin confirmed to Bild.
The striker’s agent, Andriy Golovach, added: “It was a good conversation, I think we are on a good way.”
Hertha general manager Dieter Hoeness said: “Both parties are willing to continue. We really appreciate Andriy’s performances.
“His goals, his experience and his demeanour. And he has also said Hertha is a priority for him, because he likes the club and the city very much.
“We now know we have to work on solutions for this.”