Arsenal have emerged as a potential suitor for highly-rated Napoli defender Kalidou Koulibaly, who has been the subject of great interest from Premier League rivals Chelsea and Manchester United.
Following the departures of Mathieu Flamini, Mikel Arteta and Thomas Rosicky, Gunners boss Arsene Wenger has already looked to rejuvenate his squad with the acquisition of Swiss star Granit Xhaka, following the January arrival of Mohammed Elneny.
However, various reports have also previously stated that Arsene Wenger has refused to rule out a move for a defender.
With Laurent Koscielny's continued involvement in Euro 2016, it would appear unlikely for him to have reached full fitness for the new Premier League season. The Frenchman has also become linked with a potential move away from the Emirates.
With such circumstances, The Sun have reported that Arsenal have resumed their hunt for defensive cover, with the highly-rated Napoli centre-back Koulibaly emerging as a likely transfer target.
However, Arsenal are not the only club said to be interested in bringing the Senegalese international to the Premier League.
Chelsea and Manchester United who both endured difficult defensive campaigns last season have been linked with the defender.
Incoming United boss Jose Mourinho has already added to a defensive line that was saved numerous times by goalkeeper David De Gea in the 2015-16 season, with the signing of the talented Eric Bailly.