Well .... I usually ask forgiveness instead of permission. Since lighting fistures are so easy to replace, I would trash the old one and spring for the cost of a new one that you plan on leaving in the unit when you leave. I never left a rental that I had not significantly improved "just because."
Take some pics and re-post. If you can't do it yourself, ask around. Replacing a light fixture is one of the easiest things there is to do IF YOU FOLLOW SAFETY STEPS!