Gabriel suffered a hamstring injury in April, and adding another high-calibre centre back to their ranks would give the Gunners the chance to occasionally rotate both of the defenders.

Alexander-Arnold caused uproar among fans when he revealed he would be leaving Liverpool for Spain, with it initially looking like he would be departing for free after a 20-year stay at the club.

Football's all-time leading goalscorer put pen to paper on a two-year deal, which is reportedly the most lucrative in sporting history, worth a basic £492million over its duration.

Williams, 22, has pushed for a move away from Bilbao this summer with Bayern Munich and Arsenal also reported to have been interested in signing the winger.

The Gunners have entered talks for Mosquera, 20, as they look to find suitable cover for first-choice options William Saliba and Gabriel. Arsenal appear intent on strengthening their back-line depth.