"This memorandum is being finalized. I expect that the relevant Russian developments will be handed over to the opposite side in the next few days. I have this information at my disposal," Kosachev said in an interview with the Zvezda TV channel.
It is unlikely that details will be made public at this stage, Kosachev said.
"This is still a negotiation process, and a very complex, very delicate one in many aspects," he added.