The Blues are eager to bolster their squad ahead of the transfer window closing, with a defender and forward top of mind.
Aubameyang only left Arsenal for Barcelona in January, while de Jong has been chased by Manchester United, but the Dutchman is reluctant to leave Barca where he is owed deferred wages.
Barcelona are having their own issues meeting La Liga’s financial fair play regulations, meaning they have been unable to register new signings, including Andreas Christensen and Franck Kessie so far.
The situation will come to a head this weekend with La Liga due to commence. AS claims Gerard Pique has offered to play for free to enable the additions to be registered.
But that situation adds fuel to the flames on the speculation that the Catalans could allow their star players to exit.
Sky Sports reports Chelsea are willing to match Manchester United’s 72million pound bid for de Jong, plus offer UEFA Champions League football.
De Jong has had an ongoing saga with Barca, who want him to stay but only if he accepts a pay cut. He is also being asked to accept a settlement for his deferred wages.
Aubameyang has links with Chelsea boss Thomas Tuchel with the pair having worked together at Borussia Dortmund.
Chelsea want to add reinforcements after the departures of Christensen, Antonio Rudiger and Romelu Lukaku.
The Blues have also been heavily linked with Leicester City defender Wesley Fofana.