If Brewster came through at Everton we'd never see anything close to £20m for him. Probably the wrong thread but they get extremely good money for their dross and we can't give ours away for nothing. There has to be a reason.
I'm not saying for a moment that we should be able to flog players like Kenny for £20m, but surely there has to be some middle ground between selling them for premiums like Liverpool do and loaning players out for about 3 seasons and let their contracts run down which seems to be our go-to method at the moment - all whilst subsidising about 50% of their wages.
Just because we wouldn't spend £8m on someone like Kenny, I don't think you can extrapolate that to the rest of the footballing world and declare that he is unsellable. Although it doesn't feel like it just a few days after being ran ragged by one of the worst teams in the league, but there a far worse teams out there than us where Kenny would probably fare quite well.