U.S. President Donald Trump said on Tuesday he was open to billionaire Elon Musk buying social media app TikTok if the Tesla CEO wanted to do so.

I met with the owners of Tiktok, the big owners, it’s worthless if it doesn’t get a permit,” Trump said. “It’s worth like a trillion dollars.”

Content creator Jimmy Donaldson, known on the Internet as MrBeast, has made it clear he is interested in buying TikTok. Donaldson has the most subscribers of any user on YouTube— over 340 million—and boasts over 113 million TikTok followers.

He previously floated a joint venture, saying that the US should be entitled to half of the app.

United States President Donald Trump on Monday told reporters that Microsoft is in talks to acquire the video-sharing platform TikTok and that he would like to see a bidding war over the app.Microsoft denied to comment on this,