He pledged, however, to honour the existing deal, which Ukraine considers unfair, if talks on revising it fall through.
Ukraine, which depends heavily on Russian gas supplies, has sought for over a year to renegotiate a 2009 deal with Moscow, which it says sets an exorbitant price for the fuel. But talks have failed to produce any results so far.
"The issue of (a pipeline network) sale has never been on the agenda. We dismissed it immediately," Boiko told reporters. "If we find a model that satisfies both sides, we will make a deal. Otherwise we will work under the existing contract."