Saudi Arabia is meeting with Trump and they have always advocated for a Palestinian state so I think any thing that Trump may want from the Saudi's is going to have to come with some massive Palestinian concessions. Everyone is a bit sick of Israel's shit and their desire to essentially eliminate Palestine from existence is a huge concern for stability in the region no matter how they spin it. Declaration of a Palestinian state from the USA would make Israel's head explode so I don't think he'll go that far and say it outright.
Funny enough back in the day when Reagan needed some off the books cash for the Iran-Contra thing he went to Saudia Arabia. Now Saudi's who fucking hate Iran said " Sure but you need to give Palestine a state. " Reagan said that's cool so then King Fahd went to fucking idiot Arafat who wasted time and ummmmeed and ahhhhhed and played games and the offer expired. I've always been convinced that the PLO, PA, Hamas and any other stupid terrorist asshats pretending to represent the Palestinian people don't want peace at all either.