Former Queens Park Rangers boss Iain Dowie believes that Arsenal's lack of 'game-changing players' have stunted their progress this season.
The Gunners were defeated 2-1 by rivals Tottenham Hotspur on Sunday, a result that has left them trailing Spurs by seven points.
"Arsenal were dominating on Sunday, the goals they conceded will have been a real disappointment, other than there are lot of positives but there is not the same potency as they had before," he told BBC Sport.
"They have not got a game-changer and if you keep selling your best players, you won't have that."
Next up for Arsenal is a home clash against Everton on Sunday.
