Manchester United legend Rio Ferdinand has claimed that the return of William Saliba will create "a huge problem" for manager Mikel Arteta.
Arteta signed Ezri Konsa from Aston Villa in the summer, and he has impressed in Saliba's absence.
Saliba is yet to play for the Gunners this season but is closing in on a long-awaited return from injury.
The Frenchman was included in Arsenal’s matchday squad for their Champions League clash against Slavia Prague last week.
"Mikel Arteta has got a problem; he’s got a huge problem now," Ferdinand said on his YouTube channel.
"What is he going to do when William Saliba is fit? Ezri Konsa has come into that back four, and he looks like he’s been there for ten years.
"He looks like an immovable object in that team. That’s what it feels like because he’s just slid in there and taken that place. He looks dominant, aggressive and accustomed to wearing the Arsenal shirt."
EPL: Rio Ferdinand names Arsenal player that will create 'huge problem' for Arteta