Club legend Ray Parlour says Arsenal need a new central defender and a new striker if they are to be competitive in this season's Premier League campaign.
With the official season yet to start, the Gunners have to deal with two long-term injury problems as defenders Per Mertesacker and Gabriel Paulista will be ruled out for weeks.
And the 42-year-old has echoed the sentiments of the fans who took to Twitter to express their frustration at how the club has moved so far in the summer transfer window.
"There's always a positive vibe [about Arsenal]," Parlour told Omnisport.
"You've got to be confident and believe in yourself as a player.
"But we know how many quality sides there are in the league so it's going to be difficult for Arsenal.
"But they've got some good young players coming through - [Alex] Iwobi really impressed me, he scored in the first half [against City], and Theo [Walcott] looked lively. They've got a very good side.
"It's a long hard season, you need the luck along the way. They're still waiting for a couple more signings that would really make the fans feel more confident.
"Certainly [Granit] Xhaka's a good player, he'll bring more steel to the midfield. They've relied on Francis Coquelin a lot for that.
"I'm sure there's things going on behind the scenes, you know how long these deals take now. John Stones was expected three or four weeks ago, Paul Pogba was very similar. They take a lot more time now.
"It's very difficult at times, with clubs not wanting to sell, agents fees, all this sort of stuff. It's a lot more complicated.
"If they can get the right deal, the right player in to make them stronger, obviously they'll have more chance. The bigger squad you have, the bigger chance you have of winning the Premier League or reaching the latter stages of the Champions League.
"It's not too difficult to look at it as a fan: they need another centre-half, particularly with Gabriel going off.
"Another centre-forward will be great as well. But I think Arsene Wenger might put Sanchez a little more advanced this season, he's always impressed for Chile like that.
"He could maybe play Giroud and Sanchez up top - he played really well with Griezmann at the Euros."