The Greek stopper joined FCN in January on-loan to the end of the season - and such has been his form that it's been suggested Nurnberg could seek to sign him permanently.
However, Mavropanos insists he will only be staying with FCN temporarily.
"Everything has been resolved, I'm here as a loan player," he told Kicker, before admitting he's surprised himself by how quickly he's settled.
"It feels like I've been here for more than a month - more like a year."
Mavropanos has a deal with Arsenal to 2023.