Let's do a thought exercise.
We'll use two examples using the same theoretical person.
A.) A WR coach that works for a professional football team, the San Diego 58ers is offered a job as a WR coach at his alma mater, the University of South Beach. This would mean making more money; however, it is a risk that could change the current trajectory of his career. The negotiations between said WR coach and the head football coach of the University of South Beach have gone very well. It's time to sign the deal finalizing the change. At the last moment, the WR coach decides he doesn't want to risk it and tells the head coach thanks, but no thanks. He returns to his old job at the same salary, with no bonuses. Everything is the same. He didn't want to take the risk despite weeks-long negotiations.
B.) The exact same situation as above. At the last moment, the head football coach of the San Diego 58ers tells the WR coach, "I will up your salary and throw in multiple bonuses, including other incentives that all but guarantee your trajectory continues to climb." He returns to his old job, making more money, better incentives, and more responsibilities under one of the best coaches in professional football. He tells the head coach of his alma mater thanks coach, but they made me an offer I can't refuse.
Now, which situation is cold feet? Are they both cold feet? Are neither cold feet?