Manchester United have refused a film crew behind-the-scenes access at Old Trafford in what could be construed as an act of derby-day point-scoring.

Manchester City are four months into a £10million, season-long documentary series produced by Amazon Prime, charting their second campaign with Pep Guardiola in charge. But in a serious blow, they will be unable to capture intimate moments before or after Sunday’s clash.

It means the Amazon crew will not be allowed into Guardiola’s dressing-room either. They are believed to have a station pitchside to shoot footage. City are likely to be disappointed by the developments ahead of the documentary’ s release in 2018, which they hope will showcase a trophy-laden year.