Antelope caught, creating concern (5)
I believe the answer is:
topic
'concern' is the definition.
(thesaurus)
'antelope caught' is the wordplay.
'antelope' becomes 'topi' (topi is a kind of antelope).
'caught' becomes 'c' (cricket abbreviation).
'topi'+'c'='TOPIC'
'creating' is the link.
(Other definitions for topic that I've seen before include "Subject (of a talk, etc)" , "'Theme, subject (5)'" , "Talking point" , "Question" , "Matter for an argument" .)