Chelsea are reportedly willing to offer Filipe Luis a return to Atletico Madrid in order to sign Koke this summer.
The Premier League leaders have been heavily linked with a move for the 23-year-old, who is believed to have a £44m release clause in his contract.
According to AS, Atletico will only be willing to consider a sale if Koke demands a transfer, while Chelsea are hoping that a swap deal involving Luis will help persuade the La Liga side to part ways with the player.
The report has insisted that Koke is happy to stay at the Vicente Calderon.
