Vision of Barney nursing sore wound (9)
I believe the answer is:
foresight
'vision' is the definition.
(I've seen this before)
'barney nursing sore wound' is the wordplay.
'barney' becomes 'fight' (barney is a slang term for a disturbance or fight).
'nursing' is an insertion indicator.
'wound' is an anagram indicator (wound can mean twisted or turned around).
'sore' with letters rearranged gives 'ores'.
'fight' placed around 'ores' is 'FORESIGHT'.
'of' acts as a link.
(Other definitions for foresight that I've seen before include "Caution" , "Anticipation" , "Clairvoyance" , "Ability to anticipate" , "Power of prediction" .)