Wenger insisted that the opening day shock wasn't down to a lack of summer investment.
"If we don't spend the money, it is because we don't find the players," he said.
"I am not the only one to work on that, we are a team that works on that and we are ready to buy the players if we find the players good enough for us.
"My job is to make the fans happy, but we haven't lost a game because of that (not spending).
"We take our work seriously and we analyse every player in the world and spend 24 hours a day doing that.
"We are ready to spend, but until we buy players we have to win football games and it is not an excuse not to win the game."
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