Attention please - language lesson in progress.
Negro is not a word in French. You either go for Nègre - ****** in English, or Noir - Black.
Negro in Spanish means literally - Black. May refer to ethnicity or to another characteristic, such as hair colour.
The entire disagreement pretty much falls over whether you believe Evra or Suarez as to context and what was said?
It has the same effect. Why do you think Evra reported it? He was offended by it. If he thought it was an acceptable word then he would not have reported it.

