Cristiano Ronaldo promised to be a "good boy" as he prepares to face a tide of boos at the Aviva Stadium.

The Portugal skipper will lead his teammates in their World Cup qualifier with the Republic of Ireland in Dublin on Thursday a month after celebrating Rúben Neves ' last-gasp winner in the reverse fixture in the face of defender Jake O'Brien .

Ronaldo told media on Wednesday that he expects to be booed, but is concentrating only on the task of helping his team reach what will be his last World Cup finals.

He said: "I really like the fans here. The support they give to the national team, it's lovely. For me, it's a pleasure to come and play here again.

"Of course, it will be tough. I hope they don't boo me too much tomorrow. I swear that I'm going to try to be a good boy.

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