The president said he and Chinese President Xi Jinping still need to sign off on a preliminary deal, even though he called it "done."

The three largest markets in Asia – China, India and Japan – are "very appealing" to long-term investors for very different reasons, Vikas Pershad, portfolio manager at M&G Investments told CNBC's 'Squawk Box Asia' on Wednesday.

China will send Vice Premier He Lifeng to London on Monday for another round of trade talks with the United States, following a direct phone call between