4. Mario Hermoso
He was a part of Real Madrid's youth set up. Having played in Real's Segunda B divison, and made his professional debut in 2015.
A ball playing defender, who follows the no nonsense defending principle. Having joined RCD Espanyol in 2017, he already had made rapid progress in Spanish Division. With 85% passing ratio and an average match rating of 7.29, he is very much consistent on the pitch.
Arsenal have their own defensive woes having conceded 15 goals for this season, the most goals conceded by among the top 5 premier league teams. They need a calm and composed defender who can stop the leakage of goals, one can understand that why gunners are behind Hermoso.
Age : 23
Current Club : RCD Espanyol (contract untill 2020)
Postion : Center Back/ Left Back(Rarely plays in that position)
Transfer Market Value : 18 million Euros