The transfer ban is looming over Stamford Bridge, and Chelsea are trying to get any business that they can over the line.
The Blues, however, have been knocked back after an approach for Valencia's Goncalo Guedes.
Guedes has emerged as one of their top targets to replace Eden Hazard after consulting the Portugal international's agent Jorge Mendes.
According to Plaza Deportiva, Chelsea bosses firmed up their interest by submitting a €70m (£62.5m) proposal to Mendes.
It is claimed the super-agent presented the offer to Valencia, but the Spanish club swiftly rejected it.
Guedes is under contract at the Mestalla until the summer of 2024, which contains a release clause worth €300m (£267m).