Arsenal are reviving interest in Mainz defensive midfielder Jean-Philippe Gbamin.
The Mirror says Gbamin would set the Gunners back around £30million, but is being courted by several European clubs ahead of the summer transfer window opening.
Arsenal are well-stocked with defenders but are looking to bring in some new blood, sell on some out-of-favour players and reduce the club's huge wage bill.
Nacho Monreal and Shkodran Mustafi are two players who could leave - should Arsenal find buyers for the duo - but both would need replacing.
A left-back is high up on Unai Emery's wishlist, as is a wide player and a box-to-box midfielder to replace the outgoing Aaron Ramsey.