PRESIDENT Donald Trump has called TikTok a "hot brand" as Microsoft considers buying out the Chinese app. But he warned that any potential deal would need to result in a large pay-out for the US Treasury. Yesterday it emerged that Microsoft may still go ahead with a mega-acquisition of Chinese-owner social media app TikTok. Talks were thrown into disarray as US President Donald Trump warned he could ban the app as soon as Monday. But Microsoft has now been given a grace period to discuss a buy-out, after a phone call between CEO Satya Nadella and Trump. "We had a...