Bangladesh, Jan. 16 -- A future "Phase two" US-China trade deal would ease US tariffs on goods purchased from China even if the next agreements are segmented into multiple rounds, US Treasury Secretary Steven Mnuchin said on Wednesday.

"Just as in this deal there were certain rollbacks, in Phase two there will be additional rollbacks," he told CNBC. "It's really just a question of - and we've said before - phase two may be 2A, 2B, 2C. We'll see."

"The first step is really focusing on enforcement, but this gives China a big incentive to get back to the table and agree to the additional issues that are still unresolved," he added.

Mnuchin joined CNBC hours before top American and Chinese negotiators planned to sign the phase one deal that ...