Chelsea are considering a swap deal which will see Javier Pastore come in and Diego Costa leave
The Blues apparently tried to sign Pastore in January but a move failed to materialise.
Chelsea boss Antonio Conte is interested in bringing Javier Pastore to Stamford Bridge
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Costa, 28, has been attracting interest from PSG ever since his training ground bust-up with Conte.
The Blues striker and the fiery Italian have since made up over the issue, but Chelsea are still said to be mulling over an exit plan.
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And Costa himself is open to a move to the Ligue 1 side after insisting "why not?" and and referring to PSG as a "respected" club.
Javier Pastore has made just 15 appearances for PSG this season
Conte is keen to bolster his ranks ahead of next season and views Pastore as an ideal player to fit into his 3-4-3 system.
Pastore has been at PSG since 2011 but has found game time hard to come by under Unai Emery this season, making just 15 appearances in all competitions.
He is contracted to the club until 2019.