On the face off it, John Stones for 47.5m is the real eye-opener of the off-season.......he's pretty error prone. But I guess you look a bit deeper, and you see City have a shark ton of money so Everton will charge more, he's English (and City need that), and he's young. You can pretty much justify every transfer fee if you try hard enough in the fantasy vacuum that football exists in (in the real world it's all obscene)
You've got to think that there are players better than Stones and English available in the Champo. The fear with City is that they are purchasing to make sure they stay up the top of the EPL at the moment...but once their academy kicks in (as in starts to bear fruit from the investment) they will start to churn out World Class players.