One trailing criminal reportedly noticed repellent sight (7)
I believe the answer is:
eyesore
'sight' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for eyesore that I've seen before include "Ugly item" , "Monstrosity" , "ugly feature" , "offensive to viewers" , "Ugly building" .)