15 January, 2018
The Gunners defeat means they are still yet to win in 2018, and have only take maximum points from three out of 12 Premier League fixtures this season.
Wenger also explained why he left out wantaway Alexis Sanchez, who has been linked with Manchester United and Manchester City, and Mesut Ozil from his matchday squad.
"Half in, half out", Wenger said of Sanchez's current position at Arsenal.
The Gunners got off to a positive and hit the upright in the opening 10 minutes through Ainsley Maitland-Niles' powerful strike.
Arsenal will now look to banish the disappointment of defeat at Bournemouth by beating Crystal Palace at the Emirates Stadium next weekend, a game which is followed by an EFL Cup semi-final second leg tie against Chelsea; the first leg ended 0-0 at Stamford Bridge.
Alexandre Lacazette, a player who has been low on confidence of late started up top - and with Sanchez departing the Frenchman now has an even bigger onus on him to become Arsenal's main goal scorer, something he couldn't manage on the day.
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Four minutes later it was 2-1, Ibe running onto Wilson's lay-off and firing home a fierce strike to open his league account for the club.
Bournemouth restored parity on 70 minutes as Callum Wilson turned home Ryan Fraser's cross to draw the hosts level, 1-1.
With 20 minutes remaining Bournemouth found a deserved equaliser.
- At average age of 25 years and 56 days old, Arsene Wenger named his youngest Arsenal starting line-up in the Premier League since November 2012 v Aston Villa (25y 11d).
Four minutes later, soon after Arsenal had brought on Aaron Ramsey to try and get themselves going again, the turnaround was complete when Wilson controlled a long pass forward and set up Jordon Ibe, whose shot went in off Cech.