Not saying Goodman doesn't have sources but stating Coach X won't be IU's next coach takes zero knowledge of what is happening, literally every person on the planet minus one will not be the next IU basketball coach.
An easy way to sound more informed than one actually is, is to state as fact unlikely names as absolutely out. Chances are he is correct and sounds connected, if he ends up being wrong, it's easy to say things quickly changed, or my source was mistaken.