Looks like something that would go underneath for vent/drain hoses. I'll have a look to see if there's something similar on mine.
from memory it attaches to one of the bolts that holds your gauge cluster bracket to the frame, it is a guide for the clutch cable
The bike is together now and runs well, so just sorting all the little bits and pieces. Can't afford a full respray at the moment so it's a mix of colours.