Chris Smalling made up for his first-half clanger by scoring a dramatic winner after Jose Mourinho had urged his players at half-time not to become the Etihad clowns.
Smalling knew he had messed up when allowing Vincent Kompany to outmuscle him for the City opener and the runaway Premier League led 2-0 at half-time.
But the England defender, who made amends with a brilliant strike after Paul Pogba's quickfire double, said: 'I owed them that.
'When you make a mistake you want an opportunity to make amends.