All of this falls in dead waters as soon as people realize, Bytedance has already let tiktok die in the states once due to it's refusal to sell under the ruling. I don't see how them learning that the US government and a third party /also/ want to buy it will change anything. I think the outcome will be the same.
Bytedance has made it clear, they would rather have the app offline in the states and leave it online for the rest of the world, then to lose their product, and even if they wanted to sell, which they have currently stated they don't, that type of deal would need to be OK'd by the Chinese government first, and there's no way that would happen with a third party, let alone if it means the US government would get half the company.
I respect Trumps hustle for wanting to give one of the worlds largest social media platforms onto American Soil(more explicitly/likely one of his advisors/business partners), but I really don't think it's going to work.