Leonardo Bonucci has been criticised after suggesting his teammate "should take 50 per cent of the blame" but Sarri doesn't believe he is a racist, despite making a clear error of judgement.
"Hudson-Odoi is very strong, he has a great character; a very strong boy," Sarri said in his press conference ahead of the Premier League match against West Ham on Monday night.
On Bonucci he added: "I was surprised that this happened in Cagliari. Usually in Cagliari it's a good atmosphere in the stadium.
Racism in football
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"I think Leonardo Bonucci made a mistake. But I am sure he probably wanted to say something different.
"Because I am sure Leonardo is not a racist. He made a mistake of course. We can only be an example for people. But it's a very difficult to solve the problem."
Meanwhile, Sarri says Ruben Loftus-Cheek has blossomed into a "complete" midfielder under his stewardship.
The England international has added a defensive element to his game and his manager believes he is now ready to feature more regularly in the first team.
"Now tactically Loftus is a very good midfielder," said Sarri. "At the beginning of the season he was a very offensive midfielder.
"Now he is complete I think. Maybe he's ready to start most of the games, but we need to check every day the condition of his back.
"This morning he had only a recovery session. Because he needs time to recover after a match.
"The problem in this moment is only that probably he's not able to play for 90 minutes."
PA
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