Now you're doing exactly what shouldn't be done, and that's automatically believing the supposed victim. We have no idea if Juan Jesus is lying or misunderstood what was said, just because he claims he isn't or didn't. It's a lose-lose situation for Acerbi, no matter what he does. If he doesn't claim innocence and stays silent, everyone will believe he's a racist who's afraid to admit his faults, and if he claims he didn't say anything racist and receives pushback, he's seen as a lying racist.
Let them investigate - no matter what happens, Acerbi's reputation, at the very least, is forever tarnished. Maybe justly, maybe unjustly; we don't know yet.
For context, Juan Jesus said something similar in 2014
During the program Esporte Espetacular, which carried out a survey on racism in the sport after the episode of the banana thrown by a Villarreal fan
sempreinter.com
"The Brazilian claimed to have been racially abused by the Argentine attacker Gonzalo Higuain, who was then at Real Madrid and is now at Napoli. This is his story: “During a normal play, I stole the ball from Higuain. At that moment, he started saying to me: ‘Go away, n*****, monkey, go away’. At first, I was puzzled. For about ten seconds, I wondered why a guy known throughout the world for his quality and personality would do this. It saddened me; I felt helpless, I didn’t know what to do.”
Now I'm on the side of "what would Juan Jesus gain from lying in the scenario?" - I'm also on the side of "if Acerbi said something vile, why would you, as someone who supposedly experienced a racially motivated 'attack,' just shrug it off as something that happens on the pitch after complaining to the referee?" But I'm having a hard time believing Higuain would spontaneously begin loudly shouting racial slurs in a friendly match simply because Jesus took the ball away from him. In any case, nothing came of it, but at the very least it shows that Jesus isn't afraid to make accusations in the public sphere. Who knows.