Wenger confirmed last month that he will walk away at the end of the season, bringing to an end nearly 22-years in charge of The Arsenal that's seen him win 17 trophies including two doubles and the Invincible season.
Wenger said in in his prematch interview that the Germany global has "a recurrence of his back problem", and added: "How long is he out, I don't know".
"I always felt that after 2016 that the club would be in a financial situation where we would compete again".
"What I will miss most about this job is the competition itself", Wenger wrote. Some proud fans3. A parting gift4.
As you might expect, the club themselves also laid on a special farewell, with the current squad using their shirts to deliver personal messages of thanks to for the departing Frenchman.
Meanwhile Arsenal face Burnley on Sunday at the Emirates in Wenger's penultimate game in charge of the Gunners.
Wenger and Arsenal have been coy about what directly prompted his departure with a season remaining on his contract.
"I don't think he'll be available for the rest of the season".
Arsenal put their midweek exit from the Europa League - and any hope of Champions League football next season - behind them with a pair of goals from Gabon striker Pierre-Emerick Aubameyang and strikes from Sead Kolasinac, Alexandre Lacazette and Alex Iwobi. "Thank you all for having such an important part of my life, thank you all, well done, bye bye". I don't know how I feel!'.
However, there was plenty for the supporters to shout about in a fitting finale for Wenger as Arsenal displayed the attractive brand of attacking football that characterised his most successful sides over the past two decades.
"I am not happy about it or enjoy it when another team loses, but of course it is for our interests", he said.