Your link:
"LONDON -- Belarusian President Alexander Lukashenko -- a close ally of President Vladimir Putin -- warned that the Kremlin 'will never' accept a European troop deployment to Ukraine, as Moscow and Kyiv continue to maneuver for advantage in U.S.-sponsored peace negotiations."
Rightly or wrongly, Putin believes Europeans have every intention of dragging Ukraine into the EU/NATO orbit which a vast majority of Russians regard as an existential threat.
Russia's conditions for peace haven't changed much since 2022:
Peace negotiations in the Russian invasion of Ukraine - Wikipedia.
"On 28 December 2022, Russian Foreign Minister
Sergey Lavrov stated that peace talks with Ukraine would only resume if it recognized Russia's sovereignty over the annexed and partially occupied regions.<a href="
Peace negotiations in the Russian invasion of Ukraine - Wikipedia"><span>[</span></a>"
It seems highly likely any Ukrainian leader who agreed to this condition would face another existential threat from his domestic Nazi detractors.