Ive been working at a company for almost 8 years now. There are some changes going on currently as far as management trying to move people around and make things better. I was offered a supervisory position last week. They shook my hand, told me I was the right man for the job and it was mine. We discussed new responsibilities and changes and I was promised quite a pay bump. Everything seemed good, they are more than impressed with me. But a certain coworker who doesn't care for me heard the news and told management he would quit if I was put in charge. Management withdrew their offer to me because they don't want to lose anyone. They didn't offer anyone else the job yet, its just not me because he will quit if its me. And now I am, needless to say, mad. This doesn't seem right. Any advice??