If Ukraine is to be split into two parts: the Pro-Russia Eastern part and Pro-EU Western part, the Western part will suffer a lot because it does not have much economic and geopolitical value to EU and US.
That is to form a "unity" or balanced government in Kiev, fully reflecting the interests of EU and Russia.
I think that Germany and Russia wants this route. But US does not. So eventually, we would likely see Ukraine split into two half.