Ac Milan's Ghanaian defender Prince Kevin Boateng leaves the pitch during the friendly football match between Pro Patria and Ac Milan in Busto Arsizio on January 3, 2012. Boateng stormed off the pitch after racist chants from a group of fans on Thursday, forcing a friendly away game against fourth-tier club Pro Patria to be suspended. "Shame that these things still happen," the 25-year-old German-born Ghanaian player said on his Twitter account after the match was stopped in the 26th minute when he led his team off the pitch. Boateng picked up the ball, kicked it towards the stands and walked off the pitch in Pro Patria's home town of Busto Arsizio near Milan. AFP PHOTO / ALBERTO LINGRIA