He wouldn’t get in our team.
Laporte shits on him from a very great height and both Kompany and Stones are better than him.
If he still played for Southampton there’s no way he’d be anywhere near a POTY discussion.
I don't think he'd be the same player if he were still at Southampton. Klopp has improved him in the same way that Guardiola has improved almost all of our players. Great managers elevate players. Iniesta wasn't the same player prior to Guardiola going there are as he was when Pep got to work with him. Ditto Messi, Xavi, Busquets, Philip Lahm, Kimmich, Raheem Sterling, and Bernardo Silva.
I might agree with you that the only team he wouldn't get in at City because Laporte and Stones are more comfortable on the ball and play Guardiola's style better than this version of Van Dijk does (who knows what he'd look light after Pep works with him for a year) but I don't think you seriously believe that Vincent Komoany in 2019 is a better defender than Van Dijk. That's....something I wouldn't even know how to begin to respond to.