There's really nothing Trump has to offer that would make Putin pull out or even limit any part of control of Ukraine.
Putin simply can't let go of Ukraine. It's more than just resources, yet as well apart of his strategic plans. He must have Ukraine to go forward.
That whole Black Sea area is a strategic position for both south and west. Including into the Mediterranean sea.
It would be like given up control of the mouth of the Mississippi. Everything goes through the Black Sea there.
No land swap in the Bering Straits is worth it. There simply is nothing there worth the trouble.
Such a land swap would be like a insult to all of Russia. Not just Putin. His oligarchs might even get up the courage to revolt against Putin, if by some fluke Putin accepted.