However, the former Blackpool frontman has admitted that he is keen to weigh up all of the options available to him.
"I'm looking at all the possibilities before I decide what's best for me," he told West London Sport. "I'm still a QPR player at the minute. Whether that changes, we'll have to wait and see. There's nothing finalised at this stage.
"My focus has been on getting fit and making sure I'm ready to play this season.
"Last year I missed a lot of the season through injury and I don't want that to happen again, so I've worked really hard to get in the best shape I can be."
Campbell scored one Premier League goal for QPR last season.