In the case of a manager leaving his position, if you want to know if he is fired or moved to a better position, notice his speech in his farewell:

If he is not fired:

1. He speaks about his past achievements with pride.
2. He speaks about his future with enthusiasm and excitement.

If he is fired:

1. He speaks about past achievements with a pity tone.
2. He speaks about his future with doubts and almost have no concrete or exciting plans.