He literally avoids heading the ball. Makes rash decisions game in game out, constantly found out of position, constantly mistiming challenges.
I don't understand why people are comparing him to Colo. Colo had 5 seasons of top performances in La Liga, came over and struggled in a shit team that had Guthrie and Butt in midfield. Luiz hasn't had a good game in a top class league, has come over and been a complete liability despite being surrounded by very good players.
The people saying he'd make a great DM. He used to play there but he ended up at CB BECAUSE he was a liability in that position. You need good discipline to play as a holding midfielder.
£25 million pissed up the wall.