Boulahrouz has tipped Van de Ven to eventually replace Van Dijk for the Netherlands - and also make the move to Liverpool.
“I think he's the ideal successor to Virgil van Dijk, both in the Dutch national team and at Liverpool,” the former Netherlands international told ESPN NL.
"And Liverpool aren't crazy: if you're looking for a world-class left centre-back and you have the money, you'll quickly end up with Van de Ven.
"The same goes for the Dutch national team. I think Koeman has long since realized that Van Dijk's successor is already out there.
"He's (Van de Ven) really outperforming them. He's physically strong and incredibly quick. Opponents know that, so they don't even try to get past him anymore.
“He could still do better on the ball; he makes the occasional blunder. But overall, I think he's fantastic.”