All teams rely on their best players but perhaps Manchester United do so more than some of their rivals.
Take Paul Pogba and Eric Bailly out, for example, and deficiencies emerge.
Modern football is a squad game, and United’s team on Saturday had some obvious holes in it.
Jose Mourinho spoke about attitude, but what if the problem is more fundamental? What if his squad isn’t deep enough to challenge a Manchester City team who — apart from at left back and goalkeeper — have genuine cover in all positions?