Manchester United 2009 Slim Diary. Manchester United has long been associated with the richest clubs in the world in terms of revenue. As of May 2008, it was reported that the club was worth a whopping £897million! If you are a Red Devils fan, then you shouldn’t be without your Manchester United Slim Diary for the forthcoming year. The diary is small enough for your pocket or bag, but big enough in size for all your fixtures.