He's a better defender than Stones with better passing, Stones hasn't been great for City.
I don't want a centre half who goes on big runs, his primary goal should be defending
I'd prefer Keane to Stones all day
His passing isn't as good as Stones' but that's not a massive criticism as since people are so frequent to point out Stones' defensive issues, the it surely points to how highly thought of his possession is?
Anyway re Keane he's looked very solid so far.
His speed and quickness on the turn will get tested in some of these games coming up.
But long term if we find a partner who really compliments him then he looks well set.