Mircea Lucescu hopes Chelsea will realise they made a 'big mistake' in not meeting Shakhtar Donetsk's asking price for Willian when the two clubs clash in the UEFA Champions League.
Willian has been a long-term target for Chelsea, with the Brazilian reportedly the subject of a failed £16.7million bid in January and a £27million offer in the summer.
Shakhtar coach Lucescu was prepared to let the playmaker move to Stamford Bridge, but has accused the European champions of failing to appreciate his 'true value'.
"Willian was far away from Chelsea," said Lucescu.
"They didn't even get anywhere near to our requirements, having done nothing to make my promises to Willian come true.
"Speaking specifically about the amounts, they officially offered the sum for which we had bought him young.
"I would really like them to highly appreciate his true value and realise that they made a big mistake."
Lucescu also confirmed Chelsea had been interested in defender Darijo Srna while Carlo Ancelotti was in charge at Stamford Bridge.
He said: "Several years ago, I had a conversation with Ancelotti, and he was interested in Srna.
"My wish is that, after Tuesday's match, Chelsea get interested in all of our players."