The Gunners lost 4-3 to title rivals Liverpool at the Emirates Stadium as Wenger was forced to field inexperienced centre-halves Calum Chambers and Rob Holding.
I have made 400 transfers in my life and I know every one has a rhythm that you are not the only one to decide on
Arsenal are currently without Per Mertesacker and Gabriel Paulista due to injury, while Laurent Koscielny is regaining his fitness following a demanding Euro 2016 campaign.
Wenger has been criticised for failing to bolster his defensive options and sign a new centre-forward in the summer transfer window.
However, the Arsenal manager has defended his transfer record, underlining the north London side’s search for quality signings this summer.
“We are not scared to spend money but to buy in itself is not a quality – to buy good players is. This club has been built on that,” Wenger told his pre-match media conference on Thursday ahead of their trip to Leicester City on Saturday.
“The transfer policy we have had here has helped build the club. I know we haven’t done as much as many people but we are out there. I have made 400 transfers in my life and I know every one has a rhythm that you are not the only one to decide on.
“It’s better for me not to speak about any player. But I would like to reassure you that we are not afraid to spend the money we have and we are working very hard.”
Arsenal have signed three players in the summer transfer window so far.
Switzerland international Granit Xhaka completed a £33m move to Arsenal from Bundesliga side Borussia Monchengladbach at the start of the summer.
Wenger has also added Japanese forward Takuma Asano and Bolton Wanderers defender Rob Holding to his squad this summer.
Arsenal finished in second place in the Premier League table last season behind champions Leicester City.
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