The midfielder concedes he wants to be playing regularly at this stage in his career.
Speaking after the Gunners' 1-0 defeat to Koln, he claimed the lack of playing time is making him question his future.
He said: "Of course I want to be playing. It's difficult when you play every three weeks.
"It's the same as every player. I'm still determined to win my place back, I'm working hard and we'll see what the future holds.
"If I can get in or I can't."
So far this season, Wilshere, 25, has played all five Europa League games, as well as both EFL Cup matches.