Steaua Bucharest 0 - 5 Man City : Sergio Aguero misses two penalties .
Steaua Bucharest 0 - 5 Man City : Sergio Aguero still scores hat - trick - 5 things we learned .
Steaua Bucharest 0 - 5 Man City : Sergio Aguero misses two penalties but still scores hat - trick - 5 things we learned .