He has the same problems that Skrtel had for a number of seasons before (look away now) actually improving on it in the last couple of seasons - a tendency to over-commit and dive in early, fancying the big (and lazy) one-and-done tackle rather than being patient, staying on his feet, tracking the opponent and blocking instead. That Skrtel improved on that (even in these last couple of seasons) gives me hope that Lovren can (and will) too.
Keep, but kick him in the butt every now and then.