EU officials said there was a solid consensus that remaining niggles should not hold up a final deal for Sunday, as the other 27 governments go through the new paperwork.
The USMCA would also still be subject to the full committee process, and ample debate time, which would likely push consideration of the agreement well into 2019.
Singapore's policymakers have repeatedly warned that a heated trade war between the US and China - one of the city state's major trade partners - could hurt the domestic economy.
The Chinese official said the United States had failed to back up its "unfounded" claims about China's economy that was using to disguise its own violations of the WTO rulebook.
The lifeline from creditors will allow Noble to get access to $800 million in trade financing and hedging facilities - crucial in an industry where profit margins are tiny.
China's efforts to win friends in the resource-rich Pacific have been watched warily by the traditionally influential powers in the region - Australia and the United States.