I just don't get why you're so against this transfer? He's got all the typical attributes that are required for a centre half, plus he CAN play football which basically means he's good on the ball and can pass a football. He can step out and make those runs with the ball into midfield. Both feet. The only downside would be that he's not the quickest but nor is Laporte.
From the visual point of view, he doesn't look as silky as De Light but this isn't the competition of who has the best body shape when running with the ball.
I think you judge him more for his face (he's not very handsome, P.S. I'm not gay) and that he looks a bit clumsy visually but in reality he's not.
Don't judge the book by its cover.