The 26-year-old departed Stamford Bridge in a big-money move to the Chinese Super League in January, costing Shanghai SIPG around £60m to sign.
Oscar has been in inspired form this term, playing a direct part in nine goals in 17 appearances for the Red Eagles, but he is already eyeing a Chelsea reunion further down the line.
"Yes, I would go back. I'm still young, I'm 26 years old," he told Premier League Brasil. "Who knows, in two or three years to return to the Premier League... I will be very happy. And preferably to Chelsea, who opened the doors for me to return."
Oscar won the Premier League title with Chelsea in 2015 and received a second winner's medal after playing nine times last season.