I realise many of our youngsters don't make it, but I don't think we waste much - maybe Scherpen comes into that category (albeit not yet sold), and doubtless a few others. But with Chelsea it seems to be on an industrial scale.
I see David Fofana has gone on loan to Union Berlin. Chelsea really seem to eat up a lot of talent, do nothing with it, then spit it out, having wasted a load of dosh.