Van Gaal: Dutch rising star Gakpo will go 'much further'
The 23-year-old already has 13 goals and 17 assists for PSV Eindhoven in all competitions this season and has been heavily linked with a possible move to a top European club, most notably Manchester United.
His header in a 2-0 win over Senegal and fine left-footed strike in a draw with Ecuador have put the Dutch in pole position to qualify for the World Cup last 16 from Group A.
The Oranje need only to avoid defeat against already-eliminated hosts Qatar on Tuesday to be sure of a place in the knockout phase.
"I had more or less expected that he would evolve this way but I believe that he's going to evolve even further, much further, so I'm not surprised (by his performances) at all," Van Gaal told a pre-match press conference in Qatar.
"It's marvellous that he can do this on the world stage."
The winners of Group A will face the Group B runners-up in the last 16, while the second-placed team will take on the other group winners.
England are currently top of Group B, with Iran sitting in second place.
The Dutch are level with Ecuador at the top of their standings and goal difference will decide the group winners if both teams win their games.
Ecuador take on Senegal at the same time the Netherlands are facing Qatar at the Al Bayt Stadium.
"If you want to become world champions you have to be capable of beating anyone," said former Manchester United manager Van Gaal.
"The countries you might not expect to progress are progressing, or at least making it very difficult for other teams to progress...
"Of course I'll keep tabs and I'll be informed (about what is happening in the other match). I'll take any measures that I can take."
Barcelona winger Memphis Depay, who has scored 42 goals for the Netherlands, has been building back towards full fitness at the tournament having not played for his club since September due to a hamstring injury.
But Van Gaal said he would not take any unnecessary risks with the 28-year-old.
"We're not taking any risks with Memphis because to become world champions we need Memphis...
"It's all about what I see, Memphis has to deliver as well."
