Unwelcome follower (6-2)
I believe the answer is:
hanger-on
(Other definitions for hanger-on that I've seen before include "Unwanted follower or dependant, parasite" , "A sycophant - he really clings" , "Dependent - sycophantic follower" , "An unwanted follower or dependant - swings out of you" , "Sycophantic associate" .)