From memory Hart signed his own death certificate in that friendly when he was told to play out from the back and repeatedly lumped it up to Aguero…..Pep was the first manager to be given the go ahead to drop Hart. He even benched Aguero after signing Jesus.
The fact of the matter is that Bravo did a bad job overall as City keeper in a grossly underwhelming first season. I don't particularly like Hart's demeanour and I never have (looks like a fan of rugby) but it was a poor replacement.
If you don't know, ask around and you'll find out why Hart really left.
Aguero apparently had his issues with Pep aswell early on, but knuckled down and won him around quite quickly