Albert Luque has told Newcastle manager Glenn Roeder to play him or be prepared to sell him in January.
The Spanish forward, who cost Newvastle £9.5m in August 2005, has yet to start a game in the Premiership this season.
“My situation is now desperate. I’m unhappy. I want to play in every game,” he told the Daily Mirror.
“The final decision is with the coach and if he is not interested the best solution is for me to go in the winter market,” said the 28-year-old.
Luque has scored twice in three Uefa Cup starts, but in the Premiership he has been confined to a role on the substitutes bench.
“At the moment it is play, bench, play, bench – it isn’t ideal,” he added.
“If I can get a run of five or six games, then I promise I will do well here.
“After that I want to do well and get back into the Spain squad.
“I want to be a success here, but I need to play games. I can play here and do a job for this club, but I need matches.”