CHELSEA director Marina Granovskaia is a fierce negotiator and her transfer record backs the claim up.
The Russian-Canadian is one Roman Abramovich's most trusted allies and her ability to recoup £175million for David Luiz, Oscar and Alvaro Morata will have endeared her to the Blues' chief even more.
Before his latest move to Arsenal, the Blues managed to recoup a staggering £50m for Brazilian defender Luiz when he left for Paris Saint-Germain in 2014.
Though talented, Luiz was generally considered unreliable by many Blues fans - most of whom were thrilled with the business.
Luiz eventually came back to Chelsea for £34m but one player who many fans never want to see at Stamford Bridge again is Alvaro Morata.
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After a solid start with nine goals in 14, his form and confidence fell through the floor.
But despite the fact he had become a laughing stock in West London, Granovskaia managed to ship him out on loan to Atletico in January 2019.
And after six goals in 15 LaLiga games the Spanish giants announced they would sign him that summer for £58m.
Just £2m less than the Blues paid Real Madrid for him in 2017.
And another Brazilian who turned a huge profit was Oscar.
Despite showing flashes of brilliance during his time with the club, not many saw it coming when the Blues landed £60m for him from a club in China in 2016.
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Seemingly willing to throw away the chance to win trophies in Europe and his international career the pint size midfielder has been with Shanghai SIPG ever since.
In addition to that impressive business, Granovskaia has also landed £40m for Nemanja Matic, £130m for Eden Hazard and £57m for Diego Costa in her time at the club.
Earlier today, Costa was handed a six-month prison sentence for tax offences in Spain.