In a statement on Friday, Arsenal said: "We have reached a mutual agreement with Takehiro Tomiyasu to end his contract with immediate effect.
"The 26-year-old defender, who joined us from Bologna in August 2021, made 84 appearances in all competitions during his time with the club.
"Unfortunately, injuries have limited Tomi’s time on the pitch in the past two seasons, with the defender making just one substitute appearance last season. It was therefore mutually agreed to end Tomi’s contract in order for him to start a new chapter in his career.
"Everyone at Arsenal Football Club would like to thank Tomi for his contribution to the club and we wish him and his family all the best for the future."