The 27-year-old admitted that the Dutch public have given up hope of making the last eight, but remains positive that Oranje can turn it around against the odds
Bert van Marwijk's men were initially considered among the tournament favourites, but have suffered defeats to both Denmark and Germany and languish bottom of Group B with no points.
But the Manchester City midfielder still believes Oranje have the quality to make it through to the last eight, despite the fact that the Dutch public have already given up hope.
"I really look forward to the match against Portugal. All the other guys as well. These are the games you're in it for," the 27-year-old told NuSport.
"How nice would it be if we would go through in these circumstances? Everybody is very positive and we still have a chance.
"I understand the Dutch people and that they don't believe in it anymore. Especially because we're playing against Portugal, a top class team.
"But they showed against Denmark that they leave gaps in defence and we have the players who can take advantage of that. We are still top of the world!"
Oranje play Paulo Bento's side on Sunday evening in Kharkiv. Kick-off at the Metalist Stadium is at 20:45CET.