*By Alison Kervin 28/06/2008* Image: http://www.telegraph.co.uk/sport/graphics/2008/06/28/sfnker128.jpg It was a simple enough brief: to travel to Bosnia and visit a football camp for children injured by landmines. Sir Bobby Charlton had seen charitable projects like that many times before. It was nothing out of the ordinary. But by the time he returned from this particular trip last year, the experience had changed his life for ever. "I'd seen kids with limbs missing; I'd watched chil