Jack Wilshere wants to show his former club why they should have kept him ahead of West Ham's trip to the Emirates on Saturday.
The midfielder was allowed to leave when Unai Emery replaced Arsene Wenger as boss in the summer.
And now Wilshere is determined to put in a display against his former employers.
'It's down to me to prove a point to Arsenal that they were wrong to get rid of me,' Wilshere told West Ham's match-day programme.
After breaking through as a teenager, Wilshere struggled with injuries and form before spending the 2016/2017 season on loan at Bournemouth.
Having regained his first-team place last season the 26-year-old looked set for a new contract until Emery took over as boss.
Now at West Ham, Wilshere admits it will be strange playing on the opposite side at the Emirates for the first time.