Nmecha is currently with Germany for the U21 Euros and admits leaving City after the tournament is an option being considered.
He told Kicker: "I'll do my best at the European Championships, and if I come back to Man City afterwards, maybe I'll do the preseason, maybe I'll be on loan again, maybe I'll come to Germany.
"There are prospects, there are some clubs in the Bundesliga. That would be great for me, because I speak German, because I would feel right at home. I like the football that is played in Germany."
It's been suggested Borussia Monchengladbach are keen on Nmecha, who spent last season on-loan with Preston North End.