Gullit has noticed a significant improvement in Van Dijk's game, particularly in his ability to move forward with the ball. In the past, Van Dijk would often hold onto the ball and wait for the left-back to receive it, but now he is more proactive and takes the initiative. This change has made a big difference in his game.

Gullit also praises Van Dijk's ability to press the striker when they drop into midfield. In the past, Van Dijk would often fall back and give the striker space, but now he is more aggressive and denies them any room to operate. This is a key aspect of his improved game.

Gullit has been critical of Van Dijk in the past, but now he is singing his praises. He believes Van Dijk is the best defender in the world and is playing fantastically well. Van Dijk's impressive form has earned him a new contract and he will look to continue his good form in the coming games against Chelsea and Arsenal.

Liverpool will face Chelsea next weekend, followed by a match against Arsenal, who will be coming off a tough Champions League match against Paris Saint-Germain. Van Dijk is likely to start both games and will look to help his team reach over 90 points in the season.