Chelsea beat Arsenal 4-1 in the Europa League final in Baku, the capital of Azerbaijan, on Wednesday, 29 May.
Arsenal's only route to the Champions League was by winning the match because the Gunners finished fifth in the Premier League.
It will be Arsenal's third straight year in the second-tier competition after a 19-year run in the Champions League.
But the focus of Arsenal fans' ire on social media was on Özil, who played the entire match but was virtually invisible.
Chelsea's hero was Belgian international Eden Hazard who scored two goals and ran the match from midfield. He is due to join Real Madrid in the summer.