David Luiz has travelled to London to undergo a medical and secure a return to Chelsea for £38 million (€45m).
According to goal.com reports, Chelsea launched a bid for the Brazil international on Tuesday, offering Paris Saint-Germain £32m for the centre-back.
However, PSG demanded an increase in the offer, with the French champions and the Blues reaching an agreement over a £38m, including bonuses.
The 29-year-old defender looks set to return to Chelsea just two years after he left to join les Parisiens for £50m.
Luiz has already travelled to London and will undergo a medical to complete the deal ahead of the close of the transfer window on Wednesday.