The BBC has contacted the White House and TikTok for comment.
Speaking to reporters on Sunday, Trump said, “We may let [TikTok] die. Or we may… I don’t know. It depends. Up to China, it doesn’t matter too much.”
It came as expectations grow that the deadline, which is due to expire on Wednesday, will be extended for a fourth time.
Last month, Trump suggested that he would keep extending the deadline until a buyer for TikTok could be found and called national security and privacy concerns related to the app and its Chinese parent company ByteDance “highly overrated”.
Trump was highly critical of TikTok during his first term in the White House but softened his position after he gained popularity on the app during the 2024 presidential election.
In August, The White House launched its official TikTok account.
The app is one of the world’s most widely-used social media platforms, with around 170 million users in the US.
During this week’s talks, officials are also expected to lay the groundwork for a potential meeting between Trump and Chinese President Xi Jinping as soon as October, when they are scheduled to attend a summit in South Korea.
The tariffs truce between China and the US cut import taxes that had reached more than 100% on each other’s goods.
The extension gave them more time for negotiations about “unfair trade practices” and to address national security issues, the White House said.