Rodri struggled during his start to life at City, but at least everyone could see that he had ability. He was press-resistant, was a good passer. He had good performances in big games, even in his first season. Both legs against Madrid and even away at Anfield, for example.
I think the absolute best case we can hope from Phillips is that he becomes a useful utility man like Delph. Struggling with fitness is one thing, but I just haven't seen any sign of the requisite technical ability on the ball or the tactical nous off it to play as the pivot in a Guardiola team, which is one of the most demanding roles in world football. 45m is steep for a bit player, but we have to bite the loss and invest in a proper backup for Rodri.