I've never seen him play as far as I can remember, but for €60m I'd expect him to be our best CB.
Napoli scored 6 goals in 2 games against Benfica with him playing both. Benfica had the 3rd best defensive record of Group B, behind Napoli and Dynamo Kiev.
In the first match they conceeded 4, none of them were individually to do with Lindelof although one came from a shot that deflected off of him into the path of an attacker who then won a penalty. Just bad luck really, and Nelson Semedo came up short on one of the goals.
In the 2nd match Mertens plays Callejon in behind Lindelof and he finishes for the first goal. Then Mertens dribbles past Luisao in the box and fires home while Lindelof attempts, but fails, to block the effort.
For a 60 million euro defender we aren't getting 60 million euro defending. It seems we're paying an astronomical fee because he stands out with his passing compared to other CBs. I'm not sure anyone's passing stats are better other than Barcelona CBs. So there is that.