Just 10 years ago, Chelsea were known for their lavish outlay under owner Roman Abramovich, but in the last three years they have become the masters of the other side of the transfer market.
The potential sale of Oscar to Shanghai SIPG for £52million has caught the eye, but it only speaks for the way Chelsea have succeeded when selling players since June 2013.
After that date Chelsea have made a staggering £314.4m from player sales, more than any other side in the Premier League.
Oscar's move to China is just one example of how the Stamford Bridge club have managed to eke more value out of certain players than might otherwise have been expected.