Japan's Nippon Steel is considering proposing a bold change in plan from its previous approach of seeking to buy U.S. Steel, Chief Cabinet Secretary Yoshimasa Hayashi said on Monday, though the company declined to comment.

Days after a surprise announcement from President Donald Trump about a $14.9 billion deal, the companies involved have remained mum.

Nippon Steel Corp. slumped the most in four months after a closely watched summit between US President Donald Trump and Japanese Prime Minster Shigeru Ishiba heightened uncertainty over the company’s plan to acquire United States Steel Corp.

Asian stocks tracked Wall Street higher on Friday, while the dollar eased as investors contended with U.S. President Donald Trump's reciprocal tariffs that were not immediately imposed as well as U.S. data allaying investor worries on inflation.

President Donald Trump is suggesting that Nippon Steel will no longer buy U.S. Steel as planned, but the Japanese company will instead invest in the symbolically important American business.

President Trump supports the Japanese company’s taking a stake in the American steel maker after the U.S. blocked a $14 billion takeover bid.

Nippon Steel will make a "bold proposal" in its effort to invest in US Steel, Japan's top government spokesperson said on Monday.