Jose Mourinho is a very different character than his predecessors at Chelsea. No better person than David Luiz will understand that. When his defensive mistakes are usually followed by wonderful long range strikes, Chelsea ex-managers used to forgive him and he always managed to find himself in the starting XI. But not under Mourinho.
Once dubbed as a future Chelsea captain, David Luiz’s errors have cost him not only a place in the starting XI, but also potentially on the bench. The John Terry - Gary Cahill partnership has finally given Chelsea the necessary strength and stability at the back, which Mourinho badly needed. Also, both players’ ability to contribute to the club’s goal tally, as witnessed against Southampton on Sunday, without compromising with their defensive responsibilities make them a more secure pair.