Arsenal's Francis Coquelin insists his side cannot afford to dwell on their 2-1 defeat at the hands of Olympiakos.
Paul Merson says Arsenal are in a bad way following their second straight defeat and poor run of form.
Arsene Wenger believes the officials in Arsenal's game with Olympiakos didn't "do their job in a serious way" following a controversial decision during their defeat in Greece.
Arsenal boss Arsene Wenger was positive despite defeat at Olympiakos leaving them second in Champions League Group B.
Arsenal surrendered a half-time lead to finish second in Champions League Group B after a 2-1 defeat to Olympiakos.
Arsene Wenger has admitted he will rest several key Arsenal players in Tuesday's Champions League clash at Olympiakos.
Gervinho is backing Arsenal to cause a major surprise and win the UEFA Champions League at Wembley in May.