You could tell how poor Manchester United’s defending was for the second goal of this 187th Manchester derby by watching David De Gea’s reaction to it.
As Kevin De Bruyne celebrated restoring Manchester City’s lead, De Gea dragged himself to his feet and lashed the rolling ball back from whence it came, i.e. the back of his own net. Then he lashed it again, low and hard towards the touchline, and slapped his post with a shake of the head and a curse to himself for good measure.
