One player Van Gaal knows well from his time in charge of the Dutch is striker Robin van Persie, who is likely to lead the attack at United next season.
"I think Robin van Persie is an amazing player," Kuyt told The Mirror. "He has shown that at United. Unfortunately, he was injured too many times this season.
"But I'm sure, with Van Gaal and Robin together, great things are going to happen with Man United - unfortunately! Van Gaal is an open style of manager. He has a clear idea of what footballers need in training and also outside of training.
"And if you want something to change, his door is open - but you also have to have a very good argument. He treats players as adults. He is a very experienced coach and we are very lucky to have him."
The Netherlands have already secured their place in the last 16 of the World Cup, but still face one more group game against Chile on Monday evening.