He added: “If at Old Trafford, a couple of thousand away supporters can be more noisy than 70,000, then we are in trouble, then it means there is no connection between team and supporters.
“If there is a connection, that factor being strong at home has to be back. But I think everything starts with that relationship.
“The way the team plays, the way it behaves, the mode of play. It includes the mental approach. If the fans feel that connection, they also want to “play” and if the fans “play”, there is no chance for the opponent.”