"I feel always when we make a decision in the club the same decision is valid in 10 years.
"That means in 10 years it still should work; that the club works with its income and not with somebody who comes in by parachute into your court and brings you a huge amount of money.
"For me that's not workable and not morally right. Every company should work with its natural resources, because if this guy dies what do you do? You still have to pay the players. I just feel we are not Chelsea.
"When we have paid our debt back we work with higher resources. At the moment we work with what we have."
Meanwhile, Wenger admitted his surprise at the news Keith Edelman was leaving his post as managing director to seek a "fresh challenge".
Wenger said: "We didn't expect that and I don't know why [he is leaving].
"Does he go somewhere else or has he chosen a different direction? You have to respect that.
"He has done well in a very difficult period and everybody is conscious of that."
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