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It's not as though he's not already humble but the former Athletico Madrid defender sees greatness in the youngster and says he has to remain humble and play according to instruction to succeed at the Los Blancos club.
Vinicius came in for €43 million and Donato said he's surprised to see the player playing for the Castilla.
Indeed, Vinicius has talents that far outshines the Castilla. He's been playing at Brazil in one of the biggest club the country has. He certainly wasn't brought to play for a lower division.
The former Athletico player however said that Vinicius must bid his time and continue his development to be ready when the time came for first place football in the senior team.