Rangers legend Ally McCoist believes Arsenal are facing years outside the elite.
Currently, manager Mikel Arteta's men 10th in the Premier League and 11 points behind fourth-placed Chelsea.
“It's worrying for them," the former Scotland striker told talkSPORT.
“What's worrying is if the club don't address this situation before their contracts run out, which they've got a history of doing which is shocking business; really, really poor business.
“Arsenal are weak. I'm watching them play against a team like Brighton, who are fighting for their lives and fighting for survival and I just don't see it with Arsenal.
“I see one or two really talented players, particularly Aubameyang and Pepe, who scored a great goal.
"But I just think they lack a bit of spine, they lack a hardness about them right through the spine of the team.
“And I'll tell you what, if they don't spend serious money they are going to be average for the foreseeable future."
