Souness stated that the Gunners who are 10 points behind Antonio Conte's men lack intensity and physicality in the midfield while criticising the signings of Arsene Wenger for the fall in the title challenge.
The former Liverpool skipper believes the wing-back will be the perfect buy for the Gunners to solve their midfield crisis since the departure of Patrick Viera.
“I used to think Arsenal were only a couple of world-class players away from winning the title, most notably a holding midfielder and striker,” Graeme told The Times.
“Now they look as many as five or six away from being contenders.
“A big reason for this has been the type of midfielder the Frenchman has signed in the past decade. This was a manager who won his first Premier League title with two giants – in every sense – in midfield.
“Yet since Patrick Viera left the club in 2005, we have seen no one in the robust mould of him or Emmanuel Petit.
“I look at Cesc Fabregas, Tomas Rosicky, Andrey Arshavin, Samir Nasri, Mikel Arteta, Aaron Ramsey, Theo Walcott, Alex Oxlade-Chamberlain and they are all technically gifted ball-players.
“Yet they are all the same nicey-nicey types. You wouldn’t say Marcos Alonso or Victor Moses are better technically than any of those, but an injection of the intensity and physicality they have shown for Chelsea this season would have significantly improved Wenger’s squad.”