Recent headlines have been focused on the potential for the Trump administration to slap tariffs on a new list of Chinese goods as soon as in December, but top White House economic adviser Larry Kudlow said on Wednesday that was not a foregone conclusion.

“Don’t get ahead of your skis,” Kudlow said in a televised interview on CNBC, adding: “We may have a very good meeting in Argentina with President Xi [Jinping].… These things are very hard to predict. I would say nothing is set in stone.”

Kudlow also noted that US President Donald Trump had consistently left the door open to the possibility of a deal in public comments.

“By the way, the president … did say … that if some kind of amicable deal with China were to happen, then a lot of tariffs would be pulled back.”

When asked what kind of an offer from China would satisfy Trump, Kudlow didn’t have an answer, but he said officials in Beijing “know what our list of asks are,” and “there’s always communication.”

“It is possible some good positive things could – I say could – come out of President Trump-President Xi talk.”

Kudlow went on to confirm that, while the agenda is not final, the two leaders will meet in Buenos Aires in November.

As far as a new round of tariffs coming in December, he said, “there’s no timetable here necessarily.”