Benitez sent the Ukrainian international out on loan to Bundesliga side Hertha Berlin last summer after signing Keane from Tottenham Hotspur for £20.3m.
However, with Keane now having been returned to Spurs, Voronin believes his chances of re-establishing himself in the Liverpool striking pecking order has improved.
On Monday, Voronin told Germany's Bild newspaper: ''There have not been any talks between (Hertha general manager) Dieter Hoeness, my agent and me. Though I know my agent has talked with Liverpool.
''I still have a contract there. And now Keane has been sold. Before he came last summer I was playing regularly under Rafael Benitez. With Keane gone, Liverpool don't have many strikers again.''
Voronin joined Liverpool in the summer of 2007 on a free transfer from Bundesliga club Bayer Leverkusen signing a four-year deal but, much like Keane the following year, he failed to impress Benitez.
However, while there is a sense of unfinished business for Voronin at Liverpool, the 29-year-old is enjoying life in the German capital and is not ruling out a permanent basis.
''I would happily remain [in Berlin],'' said Voronin. ''I like it here, as do my wife and children. I just want clarity as soon as possible.''
So far this season Voronin has played 15 game for Hertha, scoring four goals and setting up three others as the club challenge for the Bundesliga title.