Bosnich: Postecoglou a big risk for Celtic By webmaster - June 2, 2021 278 0 Appointing Ange Postecoglou as Celtic manager would be a “big risk”, according to former Australia goalkeeper Mark Bosnich. RELATED ARTICLES Sports McIlroy closes on shock leader Luiten in Race to Dubai finale LIVE! Sports Racing Bulls confirm 2027 line-up Sports From Champions League finish to drop zone: How Carrick’s reign unravelled