Arsenal will reportedly make a bid worth £43m to sign Villarreal defender Pau Torres in the January transfer window.
Gunners boss Unai Emery is under pressure to improve his defence in January following a recent record of one win from six games.
The North London club signed David Luiz over the summer but remain on the lookout for reinforcements in central defence due to the inconsistency of Shkodran Mustafi and Sokratis Papastathopoulos.
According to The Sun, Arsenal have identified Torres as a target and are willing to trigger his £43m release clause.
Torres has enjoyed an impressive start to the 2019-20 season and recently scored on his debut for Spain during a 7-0 win over Malta.
Arsenal had launched a pursuit of Red Bull Leipzig defender Dayot Upamecano, but the Frenchman is considered too expensive at £55m.