The Brazil international left Inter Milan for Loftus Road last summer as part of a major rebuilding project at QPR.
He was one of a number of high-profile recruits brought in by the Premier League club as they attempted to piece together a competitive squad.
Cesar has impressed during his time in England, but too many of his team-mates have disappointed during what has been a hugely difficult campaign.
With QPR still sweating on their top-flight status, speculation has surfaced regarding the future of their top assets.
It is not expected that Cesar would be willing to turn out in the Championship, should QPR suffer relegation, and a move back to Italy with either his former club Inter Milan or city rivals AC Milan has been widely touted.
The Samba shot-stopper is, however, keen to focus all of his efforts on a late survival bid.
Cesar said: "My priority is to help QPR avoid relegation."