to do something that you know might fail and spoil other people's opinion of you or cause you to lose money

There's a lot of money at stake here and none of the partners wants to put his neck on the line. 这牵扯到一大笔钱，没有哪个合伙人愿意担这个风险。

No one wants to put their neck on the line and predict an outcome. 没人愿意冒险预测结果。