I think Trump has said what he said regarding 'taking over' Gaza just as some kind of favor to Netanyahu, it's too nonsensical to be considered seriously I think.
Think about all of this logically from the Saudi perspective; no one sane in the entire world can now trust anything that Trump himself promises, not to mention some future new administrations that change every 4 years in the US that is under increasing rates of decline in all areas.
Why the hell would they accept any 'normalization' deals with Israel even if the US can theoretically offer something? And I don't think they can offer anything substantial right now for the record. They can't fix their own rotting 100-year-old infrastructure for example inside the US.
Maybe they can offer: yeah, we will bomb you and your oilfields if you don't comply with the US, and then Saudis can simply counter-offer 'bomb' their entire financial system in return and join BRICS and China fully. Not to mention, that all of this is not even considering what they might lose from this pointless 'deal' - domestic legitimacy, external legitimacy in the Arab and Muslim world, due to anti-Zionist sentiments.