Awful sights I witnessed, reportedly with son (8)
I believe the answer is:
eyesores
'awful sights' is the definition.
(things which are horrible to look at)
'i witnessed reportedly with son' is the wordplay.
'i' becomes 'eye' (I've seen this in other clues).
'witnessed reportedly' becomes 'sore' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'with' is a charade indicator (letters next to each other).
'son' becomes 's' (genealogical abbreviation for son).
'eye'+'sore'+'s'='EYESORES'
(Other definitions for eyesores that I've seen before include "Things that are ugly to look at, hurt optics" , "ugly looking things" , "They're very ugly to the eye" , "unattractive prospects" , "They are offensive to see" .)