Naruto was afraid he might accidentally kill the guy, so he figured he would let Sasuke handle the Sharingan-wielding boy himself. After all, this was Uchiha family business, and he would make sure to create an opening for Sasuke.
Seeing the white-haired boy look at Sasuke, Sarada hurriedly shouted, "Watch out! Don't look into his eyes!"
Sasuke completely ignored Sarada's frantic yelling and instead sneered, "I don't know where you got that Sharingan, but how dare you show off before me with a mere three-tomoe..."
Chapter 187