Avoidance of champ inspired by eastern girl (8)
I believe the answer is:
eschewal
'avoidance' is the definition.
(thesaurus)
'champ inspired by eastern girl' is the wordplay.
'champ' becomes 'chew' (I've seen this before).
'inspired by' means one lot of letters goes inside another.
'eastern' becomes 'e'.
'girl' becomes 'sal' (feminine given name**).
'e'+'sal'='esal'
'chew' placed into 'esal' is 'ESCHEWAL'.
'of' is the link.
(Other definitions for eschewal that I've seen before include "Shunning" , "Avoidance" , "Avoiding" , "abstinence" , "Giving a miss" .)