The future of Ukraine is most likely as a rump state west of the Dnieper. Russia gets to dump the uncooperative denizens of its new territories there, Poland and co. get to ship off unwelcome house guests, and a nice broad river marks the border between Russia and NATO territory. The most I foresee Poland taking is Lviv and the nearby land in accordance with old Polish territory. Hungary would possible carve off a small chunk that used to be theirs. Romania won't take shit. They could've had Moldova ages ago, and they're not touching that one with a 10 meter pole.
By all means, any Uke worth having has already left the country or will soon enough at the invitation of foreign nations. There's no appetite to mass import their rank and file trash like a whole new breed of Albanian.