Trump knows that everyone tries to link him with Putin and he’s going to want to shed that image. Zelensky will take advantage of this, throw him some stupid rocks in exchange for more equipment and supplies.
Hell, he sold them javelins in 2017.
It was reported earlier this week that Zelensky delayed the mineral deal with the U.S. so that Trump could take credit. That’s enough to stoke Trump’s ego. That’s how you play him.