Ozil was not selected in Arsenal’s 25-man squad for the Premier League, meaning he can only play for Arsenal Under-23s until his deal expires next summer.
The 32-year-old accused the club of a lack of loyalty following his omission.
“Upon signing my new contract in 2018, I pledged my loyalty and allegiance to the club that I love, Arsenal, and it saddens me that this has not been reciprocated.
“As I have just found out, loyalty is hard to come by nowadays. I’ve always tried to remain positive from week to week that there’s maybe a chance to get back in the squad soon again. That’s why I kept silent so far.
“Before the coronavirus break I was really happy with the development under our new coach Mikel Arteta — we’ve been on a positive way and I would say my performances were on a really good level. But then things changed, again, and I was not longer allowed to play football for Arsenal.
“What else can I say? London still feels like home, I still have many good friends in this team, and I still feel a strong connection with the fans of this club.
“No matter what, I will keep fighting for my chance and not let my 8th season at Arsenal end like this. I can promise you that this hard decision won’t change anything in my mindset — I will continue to train as best as I can and wherever possible use my voice against inhumanity and for justice.”
Arsenal did not immediately comment when contacted by CNN
And while he has had some success during his time in North London — three FA Cups and a Community Shield — that Premier League title has proved elusive, meaning 2004 remains the last time the club won the league.