The Brazilian teen struck in Sunday's victory over Alaves and was given a standing ovation by the home crowd when substituted.
Courtois stated: "At the same age, he is the player with the most self-confidence and impudence that I have seen since Hazard."
The Belgian also moved to clarify taunting remarks aimed at his former Atletico Madrid fans made over the weekend.
"The Dutch translation is a bit bad, it's a special match for me because I arrived there when I was 19 years old."
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