The Gunners’ rearguard has come in for criticism in recent days after Arsene Wenger’s side squandered a three-goal lead against Anderlecht in the Champions League on Tuesday night.
And former Liverpool defender Carragher feels that Arsenal are in need of serious reinforcements at the back.
“Whether they are conceding goals or racking up clean sheets, Arsenal need another defender – probably two,” Carragher told Sky Sports.
“Numbers-wise they are very low in that department, with Per Mertesacker, Laurent Koscielny, Nacho Monreal, Kieran Gibbs, Calum Chambers and the currently-injured Mathieu Debuchy the only established players.
“You can’t really expect to get through a whole season with that few players and with Thomas Vermaelen going in the summer, I think they need another centre-back to come in, preferably one with pace.
“I also think they could do with a bit more speed in central midfield but strengthening at the back is key for them at the moment.”
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