Ozil - who won 92 caps - criticised the German Football Association (DFB) in a three-part statement announcing his global retirement on Sunday, claiming they had failed to protect him from racially motivated criticism after the team's disappointing World Cup campaign.
"This was after we watched with sadness what was done to Ozil, " the Turkish news agency DHA quoted Semerci as saying.
Emery added: 'All of us want to help Mesut feel like it is his home here with us, like a family and it is a family for every player.
Mesut Ozil was among Arsene Wenger's favorite players at the Emirates Stadium so the German worldwide will be hoping to win over the heart of Unai Emery in this pre-season competition so that he could be assured of a starting spot in next season's squad.
That explanation led to a reaction in the German media which Ozil described as "right-wing propaganda", accusing some elements of the press of using the Erdogan scandal for their "further their political cause".
This week, Bayern Munich president Uli Hoeness also accused Ozil of "playing like s*** for years" and said the German side targeted the player as the "weak link" when the two clubs met in the Champions League.
Emery says Arsenal is like a family to all the players
The DFB itself issued a statement on Monday in which it acknowledged that it could have done more to protect Ozil from the abuse he suffered, but rejected outright the claims of racism, while again questioning Ozil's decision to be photographed with Erdogan.
'He has experience, he has quality and he has a great mentality and we are going to help him feel good and to show his quality with us.
"We are expecting good matches against Paris Saint-Germain and Atletico Madrid".
"I prefer to give him normality in the team, he feels good with us".
"It's a personal decision".
He has the support from the team and we hope by the start of the season he will be fit and ready to perform for us'.