Arsenal manager Arsene Wenger insists the Gunners started their transfer business as early and efficiently as possible, but believes it may be down to bad luck that they haven't been to add star names to their squad.
So far this summer Wenger's only addition has been young French striker Yaya Sanogo on a free transfer.
And the lack of depth and quality to the Gunners squad was shown last weekend when they fell to a shock 3-1 defeat at home to Aston Villa.
Arsenal fans voiced their frustrations after the game calling for Wenger and the board to strengthen the squad or face another season of failure.
"Maybe it was bad luck. We work very hard on transfers. It didn't come off as quickly and as well as we would have wanted," Wenger said.
"In football, you have to deal with every situation and be patient. So as long as the transfer window is open, until the last minute, anything can happen on any front."
The reaction of the fans was understandable after being told by chief executive Ivan Gazidis that the club were ready to spent big this summer.
Despite this Wenger remains optimistic he will add quality to the squad before the window slams shut on September 2.
"I am confident we will make signings because the desire of the players to join us is clear. Also the fact that we have some funds available, even if not as much as everyone writes. We have the funds to do something," added Wenger.
"The win in Fenerbahce helps. Everybody says to us, are we happy with Champions League football? Yes we are, of course but we want more.
"But let me tell you the first question a player asks when they sign asks do you play Champions League. This is how it is decided today. It is the first requirement of top, top level players."
Wenger refused to comment on reports linking the Gunners with Real Madrid duo Karim Benzema and Angel Di Maria, but reiterated his desire to develop the young talent within the Arsenal squad.
"You can buy world class players, but it cannot be the basis of any club just to buy only world-class players.
"You have to get players who can add something to what you have done with your own players.
"Look at our midfield Wednesday night. Wilshere, Ramsey, Walcott, Rosicky and
Cazorla.Out of the five, three made their debut and was educated here. Two we have bought. That is the right mixture."
Wenger did however confirm that former Gunners midfielder was training with their squad, and refused to rule out re-signing the Frenchman before the end of the transfer window.
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