The 32-year-old is nearing the end of his journey with Chinese Super League outfit Shanghai Port.
Oscar has been in Asia for most of his prime years, but his contract now expires at the end of 2024.
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UOL report the playmaker may be ready to give Europe yet another chance before he retires.
Another team chasing Oscar are Internacional in his homeland Brazil, with their manager Eduardo Coudet saying: "Our only goal, the player we are going to try moving forward, is Oscar. I want to bring in Oscar.
"I've already spoken to his manager, he can't stand me anymore. I want Oscar.
"The board ask me not to talk, but sometimes I talk too much."