Manchester United manager Alex Ferguson urged to forget they are up against a Scottish side when they take on Celtic in the UEFA Champions League on Wednesday. Ferguson is worried his players could get "caught up in the emotion" due to the rivalry between English and Scottish teams. "What you have got to do with games like this is get rid of the Scotland-England rivalry because that only makes it harder," the Scotsman was quoted as saying by BBC Sport on Tuesday. Manchester and Celtic were drawn in Group F alongside Benfica and Copenhagen. "It's easy to get caught up in the emotion if you are not careful because games like this don't come around very often."