Transfermarkt has issued a list of the 10 most valuable players right now who came up through the Chelsea academy.
Only three out of those ten players are set to be at Chelsea next season: Mason Mount, Reece James and Callum Hudson-Odoi.
Another, Andreas Christensen, features as a Chelsea player but his imminent departure has already been confirmed.
Probably the most painful fact is that two players in the top three have not even made a senior appearance for Chelsea.
Declan Rice was let go at the age of 14, while Jamal Musiala decided to join Bayern when he was 16 years old. Both are stars now.
Fikayo Tomori, Tammy Abraham, Marc Guehi and Tino Livramento were all sold last summer - and all of them succeeded at their current clubs.
In short, Chelsea prove that they have one of the best academies in the world - but with rare exceptions, other teams are far more likely to benefit from it.
