I think he's grown over the season. There are still obvious flaws in his game, but I'd be happy with him as a squad player, and not a guaranteed starter. I think Maguire has had some blips here and there, but defending set pieces he's been instrumental, cleaning up long punts, shepherding the backline and he's shown leadership. And made himself available throughout the whole season. Him being England's number one defender has benefitted him too in tricky ref calls, which is to our benefit, being perfectly honest.
I'd say overall Maguire is a 7.5 this season and Lindelof 7. We still need a top class defender in that backline, and someone who compliments both of them, i.e. left-footed, quick, intense and loves defending.