The 29-year-old’s return to London from Paris after two years away completed the squad with which Conte will continue the challenge for the Premier League and as he made clear yesterday, it was a signing he needed to increase his stock of central defenders.

Conte says he likes defenders who play football out from the back, but the media have also asked him about shortcomings in concentration and decision-making based on opinions of some David Luiz performances of the past.

‘I am happy David Luiz is with us because I know that together with Marcos Alonso, he can improve a lot this squad, and I am a bit surprised about this situation around David Luiz because I think he is good player. He has showed this in his career because he has won a lot. Also in some situations he lost but I think he is a good defender, a good centre-back.

‘I don’t want to speak about the past and now I am the coach of David Luiz and I have a great responsibility to improve him. If someone thinks a player loses concentration during the game, my task is to improve this aspect and I am not afraid of this.

‘I want to work with him and with my players, improve them with my work and if this [loss of concentration] happen in a game, I won’t be happy. I don’t like this but it is my blame.

‘David Luiz always played with PSG when he was in good physical condition and PSG won a lot of titles. David is a natural player but if he must improve in some aspect, I am here for this, to improve the players, work on their weakness and make them stronger.’