Vasiliauskas joined the ECB's policymaking Governing Council with the accession of his country, Lithuania, to the euro zone at the beginning of this year.
"I am very flexible there," he said of buying sovereign bonds. "And at the moment, the situation in the euro zone is not particularly good."
The ECB is on the verge of announcing a new programme to buy euro zone government bonds known as quantitative easing (QE), possibly as early as next week, to combat deflation and put the struggling economy back on a steady footing.
The ECB Council holds a policy meeting next Thursday.
(Writing by Paul Carrel; editing by Ralph Boulton)
