The striker says a third spell at his boyhood club would be "a matter of the heart" following the German outfit's promotion to the Bundesliga, but insists he is happy at Arsenal
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The striker joined the Gunners from his boyhood club in 2012 in a deal worth €13.4 million and was in attendance last week as Koln secured their return to the Bundesliga with a win over Bochum.
And Podolski, who recently admitted he was "not happy" at regularly being substituted during Arsenal games, has hinted at a possible move back to Koln for a third spell in the future.
"The Bundesliga is one of the best leagues in the world and therefore, in principle, is always interesting," he told Transfermarkt.
"In the Bundesliga, my thoughts naturally turn first to [Koln]. That is much more than a club for me, this is my home. Maybe I'll return one day; that is, for me, always an option and matter of the heart."
Podolski has struggled with form and fitness this season, with the club open to offers for the 28-year-old, but after four goals in his last two outings the forward is happy to remain at the club.
"[I have an Arsenal contract] which I would also like to fulfil," said the German
"But, as I said, you never know in football. Sometimes everything happens very quickly."