From "Gotham: Wrath of the Villains: Prisoners (#2.16)"
[Carmine Falcone asks Jim Gordon what he wants to do
I want to go find Lee. But to do that, I have to clear my name. And to do that, I have to go back to Gotham.
So there's your answer.
Part of me says run. I'm breathing fresh air. I can't go back inside.
If you run, you've got to keep running. Some people can live with that.