Former Manchester United manager David Moyes has now shared his thoughts about Arsenal star William Saliba and transfer target Riccardo Calafiori. Arsenal already boast an impressive defensive unit. Last season, the Gunners conceded fewer goals than any other Premier League side, as they only saw their net breached on 29 occasions. William Saliba was central to this success. The Frenchman is a talismanic presence the back for the North London club. Despite being just 23-years-old, he is already arguably one of the best defenders in the world. Saliba was able to shine on the biggest stage this …