Reporter Ben Jacobs reported that Chelsea is still pursuing Ajax teenager Harto.
Jacobs said: "Chelsea restarted Harto's transfer negotiations. There is no official offer yet, but the progress is worth paying attention to."
19-year-old Harto plays as a defender, from Ajax youth training, and is currently worth 35 million euros. He made 31 appearances in the Dutch Eredivisie last season, contributing 2 goals and 6 assists.