It is understood that the Brazilian midfielder has been in talks with the Blues and has reached an arrangement to make the short trip across London this summer ahead of the World Cup.
Although the potential transfer comes as a surprise, the story originates from the same source that broke news of his switch to England to join Spurs last year.
The move is thought to have been one of Jose Mourinho’s priorities, with the Portuguese coach known to be scouring the transfer market for midfield additions.
Paulinho only arrived at White Hart Lane at the start of the season, but there have been reports circulating for some time suggesting that he’s been set to leave.
Real Madrid and Roma have been linked with the 25-year-old, who has failed to establish himself as a regular in the Lilywhites’ starting XI under Tim Sherwood.
Paulinho is expected to put pen to paper before jetting off to his homeland to represent Brazil at the World Cup.
The deal could open the door for John Obi Mikel to leave Stamford Bridge.