Thomas Tuchel was looking to bolster his defence and wanted to sign a new center back before the start of the new season. The club tried to sign Sevilla's Jules Kounde last summer, but weren't able to get a move over the line.
L'Equipe further claim that Tuchel also tried to sign Marquinhos from Paris Saint-Germain, offering over £72m to get his man, but the French club rejected the bid right away.
The report claims that the Blues boss was keen on reuniting with a player he had worked with in the past and considered 'Ballon d'Or level' once again.
Chelsea's back five is currently made up of Antonio Rudiger, Andreas Christiansen, Trevor Chalobah, Thiago Silva, and Cezar Azpilicueta.
Marquinhos did hint at an offer from Chelsea earlier this season. He told Le Parisien: "No! It wasn’t even an offer. In fact, the club blocked talks straight away. It shows the faith they have in me.
"It is an honour for a club like PSG to put such faith in me. The fact that others are interested in me means I am doing well. It gives me the motivation to go on, boost my training sessions and play even better. Paris and PSG are the only things on my mind."