Wilshere last played for Arsenal against Watford in August a year ago and hasn't featured at the Emirates since a 4-0 win over Aston Villa in May 2016, but he is set to start as Arsenal begin their Europa League campaign against FC Köln.
"He was injured at the start of the season from last season, so he was a bit behind the other players but he's getting better and better".
If Arsenal fail to perform, Wenger will not be blaming the Cologne game - for which Mesut Ozil and Aaron Ramsey will be rested - as he feels there is enough time to recover.
"Every game is an opportunity for him and this season's a good opportunity for him as well". It gives the team a foundation of players that have grown up inside the culture and traditions of the club, something that Arsene Wenger considers very important to sustaining the Gunners long term.
Most importantly, it's a major European honour-something a club of Arsenal's size should always aim to win, even if it isn't quite at the same level as the Champions League.
"It is not the best chance but one of the opportunities", he told reporters today. The fact that winning the Europa League would bring both that and a piece of silverware is what makes it so appealing, particularly as the north Londoners are widely considered outsiders in the race for the top four back home.
The Gunners will be considered as one of the main teams in contention for this season's Europa League, and should qualify comfortably from a group that also contains BATE Borisov and Red Star Belgrade.
The Arsenal manager said, "a few players have had some response to playing two worldwide games like Ozil and Ramsey, so they are rested completely".
Olivier Giroud is expected to come in to lead the attack in his first start of the season while if Walcott is deployed on the right then we could see Alex Iwobi also making a rare start. I still want to improve again and again and want to win some more trophies with the club.