In reality we're not going to get what you consider appropriate. Not today, not tomorrow, never.
No one really wants them. They're not that great. Getting rid of them is better than keeping them around, just to say "uh ah, we're Utd, we don't get bullied in the market". No one cares.
I salute walking away from crazy demands if we want to buy but if we want go get rid of whoever it is, let him go. I personally believe that there is no point in keeping failures around. It's infectious.
The new culture should stand on merit. Being a good player, being a positive, not a burden.
I want less of "is ABC a good asset to keep around?", and more of "XYZ didn't work out, he must go". That is the culture I want.
All that football manager stuff ("assets", "profit", "resale value") is totally immaterial to me. It's business stuff. Not culture.