One Arsenal player has revealed his private conversation with Mikel Arteta after he felt he was ‘soft’ in training. The Spaniard has become one of the best managers in the world. He is truly incredible and the way he has transformed Arsenal in recent years has been nothing short of magnificent. Arteta has played a massive part in helping many players with their development. Some of them have become ‘world-class’ under him. Now, one Arsenal star has revealed how Arteta helped him behind the scenes. William Saliba shares what Mikel Arteta told him when he was ‘soft’ in trainingArsenal signed Wil…