I don’t think you’ve been following this very closely.
Kim already asked that the American troops be withdrawn from South Korea as a condition for the success of any talks. The president has already said no that will never happen.
So far Kim has given in to all the demands made by the president. President Trump has said from the very beginning that all sanctions against North Korea will remain in place until such time as the denuclearization has been completely verified by unrestricted inspection and that the nukes will be sent back to America.
From your post, unless I misunderstood it you seem to believe that North Korea has some cards to play this negotiation ocean. They have none.
Trump said no as a precondition. But I bet that if a deal is struck it will involve withdrawal of troops as a condition subsequent. That’s different.