According to Globo.com, Oscar and São Paulo are negotiating the termination of his contract. The player is entitled to receive amounts considered prizes for signing the contract at the beginning of 2025, which include bonuses and commissions that would be paid over the years. It is reported that Oscar is entitled to receive R$ 1.5 million for having signed with São Paulo, and this amount, along with other commissions, would have been distributed until the end of 2027. The club and the player are discussing these payments because the contract is being terminated two years early.

Oscar decided to retire in 2025 because of health issues. According to ESPN, the parties have a disagreement regarding the amounts for the termination. The player's intention is to receive everything he is entitled to and not to give up on arrears. An agreement had been made with the Tricolor following a meeting with Julio Casares, but a dispute has arisen because the president is away. The club is unclear on what amount needs to be paid, and an internal audit is being conducted to determine how much it owes the player. The amounts are related to image rights and bonuses from the athlete's three-year contract. Oscar's agent, Giuliano Bertolucci, conducted the negotiation for his arrival just over a year ago.

According to Globo.com, Oscar is discussing a mutual contract termination with his agents and São Paulo and is expected to announce his retirement.

In November, Oscar fainted during routine exams, spent five days under medical care, and was diagnosed with a vasovagal syncope. ESPN reported that the decision is expected to be retirement, after Oscar revealed to people close to him that he will end his career as a professional athlete following the health incident. São Paulo planned a meeting with Oscar to understand his future, and the club is studying a project to place him in a non-playing role. Oscar's contract with São Paulo is valid until the end of 2027, and the club has not set a deadline for his return, allowing Oscar to determine his own recovery timeline.