Brereton Diaz is eligible for Chile through his mother, but he does not have a full grasp on Spanish.
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"I would like him to learn Spanish, I think it is important," Gareca said at the time.
"He was called up for the Copa America two years ago, he has had enough time. It is something that I personally told him, that I would like him to speak Spanish.
I consider it essential for communication. Communication with his team-mates, with me, with the coaching staff, with the people (and) with the press."