The goalkeeper coach departs from the Blues after 15 years of involvement and has detailed his influence on Mendy's signing.
He told Foot Mercato: "Edouard Mendy is the icing on the cake. It required very discreet work. I hadn't spoken to anyone about it but I had been following him since his first matches in Ligue 2 in Reims.
"Then at some point at Chelsea, there was a need for a new goalkeeper but on the market, there weren't many people, or else it required a lot of money.
"I said to Petr: 'Do you remember Edouard? I continue to follow him'. Then he answers me, 'ok but can he?'.
"'See now that you are technical manager at Chelsea, put your eyes on him'.
"Then at the end, he tells me that we have to go. That's what we did. The success is magnificent. So we can always screw up, but Edouard had a story that made us think that his ability to adapt was going to be interesting.
"Then I worked on the methodology of the academy to try to change things but I missed the competition. So we agreed and the departure was approved long before this complicated geopolitical situation."