According to the source, the Russian side transmitted the relevant request to Washington through an unofficial channel.
The report says that at the same time, the United States considered this request problematic for a number of reasons, including due to the fact that Krasikov is in custody in Germany.
Earlier, Russian Foreign Minister Sergei Lavrov, in a conversation with US Secretary of State Anthony Blinken, urged his colleague to return to "quiet diplomacy" on the issue of a possible exchange of imprisoned citizens of Russia and the United States.
Prior to this, US President Joe Biden supported a plan to exchange Russian businessman Viktor Bout for American basketball player Brittney Griner and Paul Whelan.