You should be very clear before you even begin your negotiation what your best option is if you don't reach an acceptable deal with your negotiation partner.

甚至在谈判开始前，你就应当十分清楚如果与谈判伙伴达成可接受协议无果时，您所拥有的最佳选择是什么。

youdao

His statement left his option open to future negotiation.

他的声明留有再行谈判的余地。

youdao