Heitinga, 29, fears Holland coach Louis van Gaal will leave him out of the squad for next summer's finals in Brazil unless he changes clubs.
"I took a risk by staying at Everton," the 87-cap ace admitted to the People. "I had a few options to move in August, but they were not interesting enough.
"But maybe something will happen for me in January. Everton know I will be a free agent next summer.
"I want to get back into the Holland team. Everyone knows how Van Gaal picks his players - on the basis of how much playing time they get for their clubs.
"At the moment I'm not in contention to be selected.
"But it's going to be a big task for me to get back into the first team."
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