The England international's contract at the Reebok Stadium expires in the summer and he has been linked with moves away from the club over the last few months.
Despite the stories, Cahill has insisted that he is concentrating solely on his performances.
"There's no disguising the fact I am out of contract at the end of the season, so there will always be speculation," said the 25-year-old. "For me, it's just a matter of keeping focused and playing football and trying to play at the top of my game.
"Nobody has a crystal ball so no-one has a clue what will happen.
"I am contracted to Bolton and they have been fantastic. I will deal with whatever is in front of me if and when it arrives."
Cahill joined Wanderers in 2008 from Aston Villa.