The Slovenia striker only joined the Bluebirds last summer.
He told Nogomania: "I want to move somewhere where I will be able to play, as I surely won't get any chances at Cardiff.
"I had an offer from Portugal, but the club said no. I don't know why.
"I also don't know why I'm not playing at all. I don't believe the problem is me. I would really like to play. To get a chance at least."
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