The former Derby striker is due to return to Loftus Road at the end of the season, but Forest are likely to test the London club's resolve with a bid for the player.
Asked if he would be interested in staying at the City Ground, Blackstock told his club's official website: "I am enjoying it and everything about the club is great. The fan base, ground, training ground and the management staff. It is a massive club. My future doesn't necessarily lie in my hands. If QPR accept a fee for me it's up to me to leave."