Ronaldo was asked about the Croatia midfielder by Sportske Novosti.
"I've known him for a long time, from the Premier League. He's playing the best football of his career this season. It isn't just that he plays amazing football. It's that he does so consistently, and that isn't easy in Spain or at this club. Luka plays great football and the team can see that. He's a key member of the squad. I've got to know him well here and he's a modest, humble guy. We get on really well,"
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