The Ukrainian international is on loan at Hertha from Liverpool until the end of the season and his impressive displays this term has already caught a lot of interest from around the continent.
"There are plenty of offers from other clubs and, if it takes too long to talk with Hertha, I will be heading into talks with other clubs," Voronin told Bild.
"I want to have a decision by the end of March at the latest."
Voronin notched ten goals for Hertha so far in the season, helping the Blue Whites top the Bundesliga table with 46 points after 23 rounds.
The 29-year-old added that he's not keen on impressing Liverpool officials, as he's only focused on restarting his career away from Anfield.
"I could not care less about the idea that Liverpool know what I am doing for Hertha. I am scoring goals for Hertha, not for them.
"I really do not give a damn about the way they are thinking about me."
Since joining The Reds in 2007 after a successful spell at Bayer Leverkusen, Voronin couldn’t establish himself as a regular player in Rafael Benitez's squad.