Manchester United are consulting with fans over how to improve the atmosphere at Old Trafford, including the proposal of handing out song sheets in the stands.
United are planning to canvass the views of supporters via a survey following criticism from manager Jose Mourinho about a lack of noise during matches at Old Trafford.
Speaking at a fans' forum last month, the minutes of which have been published on the club website, head of venue operations Dan Schofield said: "As you will most likely be aware, the atmosphere at Old Trafford is something which has been frequently commented on of late, both in the media and across social networks, and is a subject the club takes very seriously.