Trump’s not going to put US troops in Ukraine (the only escalation short of nukes left). He is not going to further fund an unwinnable war. To believe any of this silliness you’d have to think Trump is stupid enough to believe this catastrophe can salvaged. No one is that stupid, especially not Trump. He will stop it immediately with negotiations.
Putin will demand Kharkiv, Odessa and Kherson to end the war. Which will result in a landlocked Ukraine.
Putin knows that the day the war ends, NATO is going to send NATO troops to secure Kyiv.