Vini Jr struck for the playoff first-leg win, though his celebrations angered home fans. He was booked for his behaviour before he clashed with Benfica winger Gianluca Prestianni as they walked back to the centre circle.
The Brazilian reported what was said to the referee, accusing the Argentine of alleged racial abuse. The match was then suspended for 10 minutes as per UEFA protocols before it resumed as controversy swirled.
After the win, Mbappe made a spirited defence of Vini Jr, declaring: “Vinicius scores the goal and goes to dance. The crowd boos him, which is something that happens. Then there is a moment of tension with the Benfica players, which can also happen because this is the Champions League and it's normal, as people want to win for their fans.
"After that, Benfica's number 25, I don't want to say his name, he doesn't deserve it, started speaking badly to him. It's unacceptable, but it has happened and will happen. But then he lifted his shirt to say that Vini is a monkey five times, I heard it. There are Benfica players who heard it too. And after this point, everything that was seen started.
“It needs to be explained calmly, we must not speak in general terms. I have come to Portugal many times, and nothing like this has ever happened. In these situations, it is important to speak clearly, and there are people who did nothing wrong. Surely there were 70,000 people who wanted to support their team.
"I have the utmost respect for Benfica and their coach, but this player does not deserve to play in the Champions League anymore. I think this competition inspires everyone, especially children. If we allow these kinds of things to pass, all the values of football mean nothing, and everything we believe in means nothing. Something must be done.”
Jose was trying to understand
Like with Vini, Mbappe was also spoken to by Jose Mourinho during the suspension.
The Frenchman also said: “He tried to understand what happened. He told me that he will never accept these types of things. I already had a good impression of José Mourinho, and now I have an even better one because I know he is a coach with values and will not let these things pass.”
On the insult, Mbappe insisted: “He said it five times. I am speaking as clearly as possible. I am telling you what I think and what I heard, and I heard it very well. It is important to explain it calmly so that as many people as possible can understand the situation.
“He said it five times. I am speaking as clearly as possible. I am telling you what I think and what I heard, and I heard it very well. It is important to explain it calmly so that as many people as possible can understand the situation.”