The Ligue 1 side edged into a first-half lead in the first leg of the last-16 clash after Geoffrey Kondogbia’s long-range strike was deflected past Arsenal goalkeeper David Opsina.
Former Spurs striker Dimitar Berbatov doubled the away side’s lead before Yannick Ferreira-Carrasco restored Monaco’s two-goal cushion deep into added time after Alex Oxlade-Chamberlain’s late strike.
Former Arsenal defender Dixon fears that the Belgium winger’s 93rd-minute goal may have condemned the north London club to a fifth successive exit at the last-16 stage.
Dixon wrote on Twitter: “One of the worst performances Ive seen for a long time. Everything went wrong. That goal at the end was crucial.”
Dixon, who was part of Arsenal’s side that won the Premier League and FA Cup double in 1998, added that Arsene Wenger’s players will move on fast from the 3-1 reversal ahead of the second leg in Monaco on 17 March.
Dixon added: “Players move on quicker than fans. Its the job. You have to be already thinking about the next game. Analyse. Then prepare.
“2-3 day window for constructive analysis. Before you know it,it’s game time again.”
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