Arsenal goalkeeper Jens Lehmann has paved the way for a January departure after criticising manager Arsene Wenger's selection policy.
Lehmann, 38, has lost his starting place to former understudy Manuel Almunia this season and the German international has revealed his dissatisfaction at the scenario.
The former Borussia Dortmund keeper hasn't started a Premier League game since August and believes he is being unfairly treated by Wenger.
Lehmann has made 190 appearances since joining the Gunners in 2003.
"My coach confirmed to me my impression that he uses a different measuring stick to evaluate Almunia," he said.
"For me, this was a huge disappointment. That has forced me to think about my situation.
"I have to ask myself what is still realistic and possible for me at Arsenal?
"It's very frustrating. When I see the performances on the field, I get angry and I have to clench my fist in my pocket."
However, Lehmann has refused to confirm whether he will be seeking a transfer when the window reopens in the new year.
"If Arsenal demand a transfer fee for a 38-year-old reserve goalkeeper, I might as well stay here," he added.