The Kremlin hopes for a "positive outcome" in negotiations on a prisoner exchange for Russian arms trafficker Viktor Bout, an official told Russian state media Friday.
That remark comes as the US blames Moscow for bringing unreasonable demands to the table in discussions on two Americans jailed in Russia.
Russian Deputy Foreign Minister Sergey Ryabkov told the state media agency TASS that Bout, who is serving a 25-year US prison sentence, is "one of those that are being discussed" in conversations with the Biden administration.
Ryabkov said that while the two sides "haven't reached a common denominator yet," the possibility of a prisoner swap is not only possible but getting stronger.
"The time will come when the prospect will become a concrete agreement," he said, according to the state media report.
In August, Bout’s attorney Steve Zissou told CNN's "New Day" he was confident the proposed prisoner swap of his client is going to happen.
"Look, it’s no secret they’ve been wanting him back for several years now," he said. "They’ve been trying to get him back for decades."
What the US is saying: In July, CNN reported that the Biden administration offered to exchange Bout as part of a potential deal to secure the release of two Americans held by Russia, basketball star Brittney Griner and Paul Whelan.
The State Department has declared both Griner and Whelan wrongfully detained. And US officials have blamed Moscow for not bringing reasonable expectations to the negotiations on their release.
Asked about Ryabkov's comments Friday, state department spokesperson Vedant Patel said Russia's "failure to seriously negotiate on these issues ... runs counter to its public statements."
“Ultimately here, actions speak louder than words,” Patel added.
Russian officials have requested that Vadim Krasikov, a former colonel from the country’s domestic spy agency, be included in the proposed swap of Bout for Griner and Whelan, multiple sources familiar with the discussions have told CNN.
More background: Whelan has been held by Russia for alleged espionage since 2018, while Griner was recently transferred to a penal colony after she was sentenced to 9 years in jail for smuggling drugs into Russia.
Griner’s detention has raised concerns she is being used as a political pawn in Russia’s war against Ukraine.
CNN's Natasha Bertrand and Fred Pleitgen contributed to this report.