Wenger admits transfer activity at the Emirates Stadium has been "slow" this summer with targets such as Suarez difficult to prise away.
And the Frenchman urged the Gunners' supporters to remain patient as the club attempt to strengthen before the transfer window closes.
"The clubs with talented players don't want to lose them," added the Arsenal manager.
"Some clubs acted very early so the choices were reduced and there is more competition coming from France with Paris St-Germain, who buy big players for huge amounts of money, so it's tough, difficult and slow.
"I can assure the fans we will try very hard to keep them happy. We are certainly ready to spend the money, but the process is going slowly but surely."
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