Never understood why English fans seem to think this guy is rubbish and yet rave on about the likes of Stones, Smalling, etc.
Luiz is one of the best CBs in the world. He's not the same type of CB as Godin, Chiellini or Silva... but he'd basically be the dream partner for those guys. You need balance in the partnership. That's why Rio and Vidic worked so well. They were different kinds of CBs.
Theres a reason Luiz is worth 50m. There's not many CBs out there like him. Personally, I'd love to have him at United. But I suppose I'm gonna get slated for this opinion.