Piast Gliwice were keen on signing the player, but he did not fancy a move to Poland.
The Czech Republic striker had starred in the Europa League with Lazio but he broke his leg early on and has struggled to establish himself in England ever since.
This summer Aston Villa moved for Jordan Ayew and Rudy Gestede to supplement the departure of Christian Benteke and Kozak has, for the most part, had to watch on.
A month ago he was reportedly offered a way out.
The club's manager is Czech himself. Radoslaw Latal was Kozak's manager at SFC Opava before he headed to Lazio in 2008 and this seemed to be where the link stemmed from.
Now the 26-year-old has confirmed to the press in his homeland that he did indeed receive an enquiry from Piast, telling Denik:
"It is true that the coach called. Needless to say that we have a special relationship.
"His interest pleased me, but regarding a possible change of the club I would prefer other options (than Poland)."
Kozak has struggled for goals in England but he is right to suggest that heading to Poland would not be a wise career move. He has recently earned himself a place in the Villa team again after the reported interest in his services seemingly came to nothing this month.
Now he will be hoping to continue his streak of appearances, and maybe add a goal or two.