Real meet Eibar on Sunday with Zidane wary of the Japan international.
He stated: “He's a great player. He's been in LaLiga and he's getting better, he's been key for Éibar. Technically he is good on the ball and you have to watch those players.
“I'm sure the opposition have done their homework. But things are just starting. Free-kicks will play a key part for us. We need to be calm. There are plenty of positives to take from all of the negatives you bring up."