Emery is also under pressure to deliver a positive result following the opening-day defeat, which showed that his new-look Arsenal team is still a work in progress, but he insisted there is no reason to change his philosophy or way of playing because of that result.
Cech received widespread criticism for his performance and hit out at Bayer Leverkusen after their Twitter account mocked his display.
There were tactical changes, such as the team clearly trying to pass out from the back more - even if it did almost result in an embarrassing own goal for Petr Cech as he narrowly avoided his own far post with a pass.
After taking over from Arsene Wenger, Emery has emphasised the importance of using the goalkeeper to help play the ball out from the back, and it was clear that his players are still getting used to the new system. Petr Cech can continue to start the match, I believe in him. "He has experience, he has quality, he has the capacity", the Gunners boss told reporters.
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Arsenal's season got off with a very disappointing start after their loss to previous champions Manchester City last Sunday after goals from Raheem Sterling and Bernardo Silva.
"Give him the time to try and implement his style of play that he wants. I want us to do well with our thinking and our mentality".
The Uruguay global, at just over £26million, represented the most expensive of Emery's five additions during the transfer window. Luckily for the Gunners, Nacho Monreal has returned to full training and could deputize against Chelsea, or Stephan Lichtsteiner could move over from right back to play left back. "We didn't lose for that", Emery said. I want a consistency in our way. Who will come out on top? Another rule implemented by Conte during his two years in charge at the West London club involved the squad needing to spend the night together at Chelsea Harbour Hotel before evening games at Stamford Bridge.