A decision to negotiate over the heads of the Ukrainians would reveal just how Trump sees Ukraine and Europe.
Disclaimer: The article linked is from a single source with a single perspective. Make sure to cross-check information against multiple sources to get a comprehensive view on the situation.
Define the “people”. Currently, the separatists in charge in the republics are openly pro-Russian and welcomed the annexation with open arms. They won’t step down quietly and accept reintegration into Ukraine. In the event that Ukraine officially claims victory in Donbas, there will be an insurgency there for years, backed by the Kremlin. There’s already been one since 2014.
I hope you don’t believe it won’t be similar the other way around, because it will. Citizens loyal to Ukraine won’t just roll over and accept the annexation no matter what the US and Russian regimes are saying. They’ll most likely keep fighting as they do now.
Honestly, the best that could happen to resolve the issue and not causing it to become a century-long problem with “generational hate” fueling a lasting conflict would be for EU countries as well as other allies (Australia, Japan, South Korea etc) to go all-in and keep supporting Ukraine, in a way it overwhelms Russia. Of course I know how unrealistic that sounds right now…