Napoli striker Gonzalo Higuain struck the before Jose Callejon netted a second against Arsene Wenger’s side to send Arsenal second in Group F below Borussia Dortmund.
An underwhelming night for Arsenal was compounded when Mikel Arteta was sent off for picking up a second booking with a needless foul on Callejon moments after Higuain lost his marker to roll past Wojciech Szczesny for the 73rd-minute opener.
Callejon netted a second for the hosts at the death, but the Italian side needed another goal to ensure a last-16 berth in place of the north-Londoners.
Going into the game as group leaders, Arsenal’s defeat sent them to second in the standings behind Dortmund, who secured a last-ditch win over Marseille in France.
Napoli: Barbosa, Maggio, Armero, Behrami, Fernandez, Albiol, Mertens, Dzemaili, Higuain, Pandev (Insigne 57), Callejon
Subs not used: Uvini, Britos, Colombo, Cannavaro, Inler, Zapata
Booked: Mertens, Dzemaili, Fernandez
Goal: Higuain 73, Callejon 90
Arsenal: Szczesny, Jenkinson, Gibbs, Arteta, Mertesacker, Koscielny, Rosicky (Monreal 74), Flamini, Giroud, Ozil, Cazorla (Ramsey 67)
Subs not used: Vermaelen, Wilshere, Walcott, Monreal, Fabianski, Bendtner
Booked: Arteta, Giroud, Ramsey
Sent off: Arteta 76
Referee: Viktor Kassai
Strong armed: Laurent Koscielny throws himself into a challenge (left) as Gonzalo Higuain reflects on a miss
Source : Daily mail