The Brazilian left Antonio Conte's side for Shanghai SIPG in January after accepting a mammoth offer from the Chinese Super League club and seeing his game time limited at Stamford Bridge.
Despite making the decision to leave England for China, the 26-year-old admits he could be tempted back to the Premier League and, in particular, Chelsea because he still has time on his side in his career.
"Yes, I would go back! I’m still young, I’m 26," Oscar told PL Brasil.
"Who knows in two, three years to return to the Premier League… I would be very happy. And preferably for Chelsea, who opened the door for me to return."
Oscar won the Premier League, League Cup and Europa League during his time at Chelsea, but saw his starting opportunities decrease once Conte switched to a 3-4-3 formation last October.
Explaining why he decided to depart Chelsea halfway through the 2016-17 Premier League season - which saw the Blues win the title - Oscar said: "The first eight games I played very well, then I had a League Cup game (against West Ham) where I started on the left and the team lost and changed.
"Then he (Conte) changed the team’s way of playing in a 3-4-3 and I did not play anymore, I did not have a position to play, because I’m a more offensive midfielder and then changed a lot.
"So I decided to leave too, but I left the door open."