Not saying DL has been faultless this season in his play.. But when he is in the team moves the ball better.. I feel safer with an attacker running at the back four with Luiz there than I do with Cahill.. We can't rush him but if we really want to make it deep in any of the competitions we are in we need him back starting game after game with Terry to build that partnership up like he had under Carlo when Luiz played his best I feel... Its all fine and dandy to play safe when you are top of the table by many points but we can't afford to play it save arsenal is still with in touching distance and we need solidarity in the back to make up those points... If you look at the Arsenal backline that was the same 4 that were leaking goals a season ago and now look at their defensive record.. We definitely have the players we just need to execute game after game and not take any opposition lightly..