“Bobby Charlton was the greatest player I’ve ever seen,” Jack Charlton said at the BBC Sports Personality of the Year Awards in 2008. “He’s my brother.” Jack was emotional as he said those words, an emotion that spoke of the deep affection and admiration between the two brothers but perhaps also of the distance. People in football would often talk about how Bobby and Jack Charlton didn’t get on. The cause was said to be everything from Munich to an unresolved family issue.  The truth, as so often, might be more prosaic, but also more interesting. They were, as Jonathan…