AC Milan coach Stefano Pioli labelled Zlatan Ibrahimovic a champion who continues to surprise him after the 39-year-old striker produced another stellar performance in Milan's 2-0 win at Cagliari on Monday. Injury has deprived Milan of Ibrahimovic's services for much of the season but when he has started, the goals have flowed to help Pioli's team climb to the top of the Serie