Not sure about those that compare him with Fred. With Fred, it was obvious that he was struggling with the pace of the league. He was having too many loose touches, under hitting and over hitting too many passes, and was not judging his tackles and moves for interceptions well. More often than not, he thought he had more time on the ball than he really did. There was obviously a player in there who was clearly struggling.
Van de Beek is not really giving the ball away too much or having too many loose touches, he just doesn't have any quality that is good enough for Premier League level. He is not very strong, he is not tall, he doesn't kick the ball longer than a few yards, he does not carry the ball, he is not quick, he does not dribble, he is not exactly a great defender, he doesn't take set-pieces, he doesn't offer much energy to compensate for his limitations. He is just nothing.
I'm honestly surprised that how he has managed to get to professional level with such a negligible skill set. Never seen a more timid footballer in the Premier League.