Not sure what a "real world value" is. If you look at what players like Owen Hargreaves and Carrick have gone for, it's on a par.
If Milner is such an average no-mark, how did they do so well last season in the League and Cups? He's the PFA Young player of the Year, and has been steadily progressing each season since making the breakthrough at Leeds. I've always rated him. If you want flicks, and tippy-tappy fancy football I can see why you're not impressed. Every team needs a Milner. If Yaya can play every game then maybe we can do without, but he's not going to manage that. De Jong is too static, so's Barry and no one else in City's team fulfils the role that Milner can play. Possibly Michael Johnson, but he's a long way off playing