I would not trade Jaylen, but the primary player from the Rockets I covet in a trade is Sengun. Trading Jaylen at this point for a 38 year old Durant is laughable no matter how you feel about Jaylen.
In fact I'd argue Durant at this point is only worth Derrick White, a young player and picks at this stage given he only has 1 year left and is 38, and there's a reason he's been on multiple teams the past 4 years now. But also, adding KD here would still not solve the center problem unless there was another move involved. Durant in theory would actually be a great 3rd option and more consistent scorer including in the 4th quarter of close games.