It was expected that the Brazil international would be among those moved out of Loftus Road over the summer, following QPR's relegation out of the Premier League.
Various clubs were reported to hold an interest in the experienced goalkeeper, but the deadline passed with no agreement reached.
Failure to secure a switch has left Cesar frustrated on the sidelines, with Robert Green reinstalled as the number one at QPR under Harry Redknapp.
With a home World Cup to think about next summer, and with regular competitive action important at the age of 34, Cesar is looking for a decision to be made once the winter transfer window opens.
He told Globo Esporte after linking up with the Brazil squad for a friendly double-header with Honduras and Chile: "I need to sort out my situation in January. A lot of things will happen.
"The situation is different now and the QPR chairman is seeing that I am not getting selected by the manager."