The UEFA Champions League holders made the announcement in a statement posted on the club’s official website on Thursday.
Van Den Berg joined the Anfield club for an initial fee of £1.3million.
The statement read: “I’ve seen what kind of players from the Academy grew into the first team here. It is unbelievable, especially when this kind of big club does that.
“It’s just an amazing feeling,” Van den Berg told Liverpool’s official website. “It is, for me, the biggest club in the world and it’s a dream come true. I am really excited.
“I’ve seen what kind of players from the Academy grew into the first team here. It is unbelievable, especially when this kind of big club does that.
“Of course, the trainer [Jürgen Klopp] is a great guy and one of the reasons they are successful – and also one of the reasons, I came here.
“I think this is the best place for me to grow and hopefully, play a lot of games here.”
