Arsenal manager Arsene Wenger has confirmed that the Gunners will soon announce their fifth signing of the summer.
Recent reports have claimed that Shkodran Mustafi will be unveiled by the club next week.
The Frenchman has confirmed that at least one more signing will be made but again insisted that it is not easy to find the right player at the right price.
"Yes we are close [to announcing a new signing]," he told BT Sport.
"But I would say spending in itself is not a quality. Spending and buying the right players is a quality.
"I am a bit fed up to always respond to the same things. We look and analyse absolutely everything and we have to make the right decisions.
"Nobody speaks about the performance of Rob Holding today - he is English, he is 20 years old, you should be happy. But I am sorry he didn't cost £55m so it cannot be good.
"That is, for me, what is most disappointing – we don't speak about the performances of the players anymore. We just speak about anything else but football and I believe it is not right."