By Richard Clarke
 
Arsène Wenger has brushed off suggestions that he should have bought a centre back in the transfer window.

Arsenal have not kept a clean sheet for six games and let in four at Liverpool this week as they exited the Champions League. Whenever a team fails to pass such a critical hurdle in their season, fingers are always pointed. Wenger admits he has made mistakes this season but argues his decision not to sign another centre back is not one of them.

"Well I expected Djourou to come back from Birmingham [after his loan spell] as a centre back but he was injured," remarked the manager. "Also you have to accept that to find a centre back who can play for Arsenal Football Club at the top of the League in January is not easy.

"Of course, I'm not pretentious enough to say I didn't make mistakes. Even if I managed for 150 years I would still make mistakes. In this job, you can never prove afterwards that you were right and nobody can prove you were wrong. Only results prove that. I'm humble enough to accept I make mistakes and I will every year. But I don't know if I made a big mistake this season."

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source Richard Clarke 11 Apr 2008