Milan 's back line has lacked stability since the sale of Alessandro Nesta .
Romagnoli made his official Milan debut on the 18th of August , 2015 , in the 2015�16 Coppa Italia , playing the full 90 minutes and keeping a clean sheet in a 2-0 with over A.C. Perugia Calcio.  Six days later , the young central defender then made his first appearance in the league with his new club , as Milan lost 2-0 to ACF Fiorentina.  Romagnoli was sent off for the first time in his Milan career on the 27th of September , 2015 , after receiving two bookable offences in the first half in a 1-0 loss to Genoa CFC at the Stadio Luigi Ferraris.  Upon returning from his one match ban , Romagnoli re-established himself as the first choice center back and went on to perform on a consistent basis in addition to providing stability in Milan 's back line which has been since the sales of Alessandro Nesta and Thiago Silva.
Alessio Romagnoli