One easy(ish) thing to do is to get your hands on some GIS data for the city, then scan for vacant lots.
-If there is a large concentration of vacant lots in a small area, analyze and try to find out why, then design an intervention to revitalize the area.
-If you notice a liner pattern or vacancies, consider an “emerald necklace” style project.
-If you don’t find any pattern and can’t find any lots that interest you, take a look at the cities comprehensive plan for future development and see if you can use it as a backbone for a project.
Then again, I’m not too sure what your masters report is supposed to look like. Is it a research document? A design project? A set of design guidelines? Be a bit more specific in what your report requirements are and the community will be able to help.