Marcus Thuram was given his marching off orders eleven minutes from time after a VAR check found that he had spat in the face of Hoffenheim’s Stefan Posch during a brief altercation between the two.
The 23-year-old France international has since been ducked a month’s wages by his club while the German Football Federation has banned him for six games and a fine of €40,000 has been issued as well.
Marcus insisted his actions were unintentional after the game and duly apologised.
Speaking to RCI Guadeloupe, Lilian Thuram said: "It's completely understandable what is happening in the media. I myself was watching the match, I was extremely shocked.
"I even asked myself the question of whether that was really my son.
"Afterwards, I had his explanation, which is to say that he was raging with anger, and so he insulted the opponent and without actually doing it on purpose, he had saliva which came out.
"What he wants is for people to remember that it's unintentional because he says himself, 'But Dad, I wouldn't want people to think I'm capable of spitting on someone on purpose because it doesn't make sense'."