The Brazilian international has reportedly been targeted by the Giallorossi, although Arsenal are also believed to be interested.
Cesar arrived at Loftus Road from Inter Milan last summer and acquitted himself well despite the Hoops finishing bottom of the Premier League.
Despite welcoming the link with the Italian club, he said that he is focused only on his efforts at the Confederations Cup.
"I'm happy to hear about the Roma interest, but at the moment I don't want to talk about my future," Sky Sports News quotes the 33-year-old as saying. "I am only thinking about Brazil.
"I'm happy at the moment. After everything that happened at Inter, my career has changed a lot, but I'm here at the moment and QPR will decide my future as well."
Cesar joined the Nerazzurri from Flamengo in 2005 and became a mainstay of the first team after a brief loan spell at Chievo.