After marking only his second Manchester United start with a goal against Southampton, Matthijs de Ligt came out with a stat which might explain his recent inconsistency. This was, the former Bayern Munich defender said, ‘the first time in about five months that I’ve played three games in a row’. With that in mind, perhaps the mistakes he made during the international break – the Netherlands beating Bosnia but drawing with Germany in the UEFA Nations League – can be contextualised somewhat. A fully match fit and match sharp Matthijs de Ligt might not switch off at the back post. Or, perhaps, g…