But then we are going to watch Sunday, how is the response of the team against Manchester City.
Just a month after the World Cup ended in Russian Federation, it's back to domestic action as two of England's heavyweights meet at the Emirates on Sunday with Arsenal welcoming Manchester City to North London. Emery has spent the most part of the preseason drilling his players and infusing in them his footballing philosophies and ideas to help them become a better team.
The Gunners entertain Pep Guardiola's champions at the Emirates on Sunday.
City have never lost inside normal time when Aguero has scored against Arsenal, although they were beaten in extra time of the 2016-17 FA Cup semi-finals after the striker had got on the scoresheet.
Rather than ask his players to eradicate that glory from their minds, as Bill Shankly and Sir Alex Ferguson might have done in order to start again, Guardiola is demanding they remember what made them such sparkling winners.
"We are excited", he said.
Silva also did not feature for Manchester City during their Community Shield victory over Chelsea due to an injury, and it has not been confirmed when Silva is expected to return for Guardiola's side.
Considering a 4-2-3-1 formation, Emery is set to go with a central defensive partnership of Sokratis Papastathopoulos and Shkodran Mustafi.
Riyad Mahrez, Raheem Sterling, Ilkay Gundogan and Kevin de Bruyne will contest the other spots.