Benfica's coach Jose Mourinho stated that Gianluca Prestianni's career with the club will end if he is proven guilty of racial abuse.
Prestianni, who is 20 years old, faces these accusations following a Champions League match against Real Madrid.
The incident allegedly occurred during the first leg of their tie in Lisbon on February 17.
Vinicius Jr. of Real Madrid accused Prestianni of racial abuse during the game.
Prestianni denies racially abusing his opponent.
The coach made it clear that guilt would result in severe consequences for the player's future at Benfica.
The club is investigating the allegations.
Further details are expected as the investigation continues.