Chelsea are now set to complete a second signing of the January transfer window after completing a deal for Molde striker David Datro Fofana.
According to Brazilian journalist Vene Casagrande, Vasco da Gama midfielder Andrey Santos is set to arrive in London on Thursday for his Chelsea medical.
The Blues have agreed a fee of €20million with Vasco da Gama for the transfer of Santos.
If Santos is not granted a work permit to stay at Chelsea, he will be loaned to Vasco da Gama until the summer of 2023.
Santos has made a big impression in his first full season with the senior team, making 36 appearances in all competitions, scoring eight goals and winning four Brazil Under-20 caps.
The 18 year old Brazilian has thrived as a ball-winning central midfielder who can break up attacks.