The offer follows a nearly three‑hour conversation between the two leaders on Wednesday, during which Putin also reviewed the October 9 diesel agreement that had been negotiated between Moscow and President Donald Trump.
No talks have taken place since February, when a ceasefire was negotiated but collapsed under pressure.
The proposed talks would focus on building a security system for Russia and Ukraine after hostilities end, Ushakov said, echoing Moscow's commitment to a long‑term framework.
In Oslo the previous day, Witkoff met Ukrainian President Volodymyr Zelenskiy, Norwegian Prime Minister Jonas Gahr Støre, and Finnish President Sauli Niinistö, discussing new European approaches that, according to Ushakov, still lack practicality for resolving the crisis.
The discussion also touched on Iran, with Putin underscoring the importance of diplomatic solutions, and reiterated Russia's readiness to facilitate a political resolution of the Iranian issue.
The next round of talks is slated to begin in May, and analysts expect the session to pivot from negotiation to implementation of the security framework.