when Toure left Barca, he was in his prime and decided he needed game time and not a backup role. That's why Toure left. True Guardiola preferred Busquet. A great player in his own right. But you need a squad and not just the starting 11. Pep also gets that. The issue was Toure wasn't interested in being a squad player for one of the best teams. He'd rather be a starter on a rising team.Pretty clear that Pep and Yaya arent best pals after the Barca spell. Just passing hasnt EVER been the only thing he requires from his players. He wants running, pressing, positioning all to 100% and Yaya cannot do any of them. He will be sold as many sources state.
So when City came calling with a great offer, great salary, and a chance to play with his brother, it was a no-brainer. He took it. Better monetery decision and better footballing decision.
Pep wanted him to stay, but couldn't offer anything as good as City had.
The situation is quite different now. I don't know if Yaya would stay, but if he doesn't, it wouldn't be because he and Pep don't like each other. They buried that hatchet over 4 years ago