Wenger's side will have to beat Serie A giants AC Milan over two legs in the Europa League round of 16 to stand a chance of making Arsenal's dream of being in next season's Champions League a reality.
Greeted by sneering newspaper headlines that asked "Arsene Who?" when he was hired as a relative unknown in 1996, Wenger blazed a trail through the Premier League with his commitment to sports science and a world-wide scouting network that far eclipsed those of Arsenal's rivals at the time. "When you have a bad week, players change their minds about their own quality".
"It makes me think a little bit about a year ago", Wenger said.
"We have not to forget we are good football players. Reachable targets to improve the team".
"Be practical, pragmatic - focus on what you can do better and analyse well what you didn't do well and not be scared too much about the consequences of a bad result".
It hasn't been a good week for Paris Saint-Germain, despite the huge amount of money they spent last summer to sign some of the most exciting players in Europe.
The French coach went on to disclose that Alexandre Lacazette and Nacho Monreal are still out injured while Hector Bellerin has a knee injury.
The Arsenal skipper claims his side are locked in a "negative spiral" and need to find a way out as quickly as possible to restore their battered confidence.
"We need to have positive advice in our heads because the brain dictates the body and the legs".
"When you have bad results, it's always bad for the team", France worldwide Koscielny added. That's the most important.
He added: 'We are in a negative spiral and it is hard to go out of this. "It is a good opportunity to show we can deal with that and as well, on the longer term, it will make the team even stronger".