According to Sky Sports reporter Kaveh Solhekol, Chelsea valued Ajax defender Harto at about 40 million euros (£35 million).
Kaveh Solhekol wrote on social media: "Chelsea's valuation of Ajax defender Hato is about 40 million euros (35 million pounds), and the reference standard is the 34 million + 4.5 million pounds spent by Arsenal when introducing Timber that year."
"Haveh Solhekol has told Ajax that he wants to leave the team. Chelsea has many options in the defender position, so the rationality of Hato's valuation can be guaranteed in potential transactions."
Dutch defender Hato is 19 years old and represents Ajax in 50 games in various competitions in 2024-25 season, scoring 3 goals and giving 6 assists.