David Luiz has admitted that Arsenal are not fit enough to play the way Mikel Arteta wants them to even after beating Manchester United 2-0.
The Gunners lost 2-1 to Chelsea in their last match at the Emirates Stadium as Frank Lampard's side came back with two goals late on.
According to the Brazilian, his side sought to address the issue of their tiredness at the end of games by trying to play with more intelligence to contain the opposition.
He has called upon the squad to continue to work hard for the Spaniard in a process that is moving forward with every passing week and predicts a bright future for the north Londoners.
In his post-match interview with BT Sport the centre-back was honest about his team's shortcomings.
"We did a great first half and we were a mature team in the second half because we have to be honest and humble to admit that physically we are not ready," he said.
"We showed that second half against Chelsea and we showed that today. But when physically you are not there you have to put your hearts and this team is in the moment now to change a lot of things.
"We can not change zero to 10 in one day. one week, or one month."
A big positive for David Luiz has been the reaction of the youngsters in the squad to Arteta.
"It is beautiful to see the kids how they start to understand the commitment, the behaviours and what they have to do every single day to achieve big things in life and big things in football," he said.
Bukayo Saka has been an important player in Arteta's first four games as head coach in addition to other youngster such as Emile Smith Rowe and Reiss Nelson.
"I think we showed that today and we are going to do big things in the future, but step-by-step," added David Luiz.
