Kobbie Mainoo must start for Manchester United in the derby

Manchester United’s visit to Manchester City presents more than a derby test. It is the first major tactical decision of Michael Carrick’s reign. WAYNE BARTON examines whether he should stick to his principles or return to the formula that worked so brilliantly in January.

Michael Carrick is urging patience after Manchester United’s slow start to the season. But as familiar squad weaknesses resurface, WAYNE BARTON examines whether the club has really moved on from its old habits.

Another late collapse, more questions at the back and growing frustration among supporters. As Manchester United’s defensive flaws continue to surface, ALEX CROOK argues the club has repeated the mistakes of the past.