It’s unclear whether he would be allowed to return to Twitter following a change in ownership.
Twitter had been one of Trump’s most effective ways of connecting with his followers.
Musk’s deal to buy Twitter has raised speculation the company would loosen moderation policies.
The executive, who also runs the SpaceX rocket company, has called himself afree speech absolutist.
Protection of free speech, under the First Amendment, applies only to the government censoring speech.