Celtic Fans Wave Flag International Brigades Editorial Stock Photo - Stock Image | Shutterstock Editorial
Celtic fans involved in violent clashes with Spanish police ahead of Europa League tie against Valencia | The Independent | The Independent
Celtic fans in high spirits in the city centre of Barcelona, Spain, before tonight's fourth round second leg Uefa Cup against Barcelona Stock Photo - Alamy
Celtic in Seville: The 12 best fan photos ahead of 2003 UEFA Cup final - gallery