Podolski recently returned to the city of his birth and also hinted at a return as he dedicated Germany's World Cup win to the people of Koln.
"Unfortunately I wasn't able to bring the trophy along with me, but I won it also for FC Koln and the city," he told Rundschau Online. "You are also world champions.
"Only re-joining Cologne would be more amazing than this, but I shouldn't say too much or else I'll get myself into bother. I've just got to bring myself back down to earth."
Podolski has scored 47 goals in 116 appearances for Germany.