Allowing almost £50m of talent to leave is an admission of failure. Having made mistakes last summer, buying too many players unsuited to the physical demands of English football, Chelsea decided to trim their squad to a more manageable number but were unable to find any buyers. Such huge natural wastage seems an unsustainable way to run any business, particularly for a club aiming to be self-financing within the next five years. Even if all three players excel, their market values will still decline, but the club had little option.