The Reds moved quickly to agree a fee before the winter transfer window opens on Monday, finally securing Jurgen Klopp‘s priority defensive target.
And they have now announced the signing, with Van Dijk set to wear the No. 4 shirt.
The deal will reportedly see Liverpool pay Southampton £70 million up front, with this later rising to £75 million.
Van Dijk underwent a medical on Wednesday afternoon, and is set to sign a four-and-a-half-year, £180,000-a-week contract that will make him the club’s highest earner.
He takes over from Philippe Coutinho, who penned a £150,000-a-week deal in January, with Van Dijk set to stay at Anfield until at least 2022.
The 26-year-old will join Liverpool on the turn of the year, becoming the most expensive signing in the club’s history.
It is also the world-record deal for a defender, eclipsing the £54 million paid by Man City for Kyle Walker in the summer.
Van Dijk will arrive in time for the Reds’ trip to take on Burnley in the Premier League on New Year’s Day, and having returned to full fitness after injury issues this season, could be in line for his debut.