"I became a keeper to play, not to stay on the bench," he told Sport-promotion.nl. "I must think also about the future.
"Why have I lost my place? I don't know because I never had an explanation. I never spoke with coach Zdenek Zeman.
"I thought it was totally pointless buying Goicoechea, considering we already had Bogdan Lobont in the squad. What was the need for a third goalkeeper? I want to play, not stay on the bench."
Stekelenburg has been linked with a move to Fulham in recent weeks.