Comolli has been blamed for their failour in the transfer market and is facing the boot at White Hart Lane.
Wenger said: “I brought Damien here because I thought he was very good. A director of football can work as long as the responsibilities are clear and accepted by everyone.
“In every job there is always a culture of finding a scapegoat when things don’t go well. We have to accept we’re always guilty, even if not always responsible.”