Those are just trends among pundits. There is hardly any analysis in there. I bet half those article writers only watch the highlights of our matches at most. The opinions of our own fans account for much more, imo. Most our fans wanted Luiz tried in midfield before last season and by the end of it most of them were convinced that he can't play there and only belongs in defense because we saw his weaknesses there. In terms of why I think that experiment has failed, we've discussed this for a very long time in the past. Here is a previous post of mine that explains my point: http://forum.talkchelsea.net/topic/13527-04-david-luiz/?p=658954