Settle for one female model returning inside (7)
I believe the answer is:
satisfy
'settle' is the definition.
(thesaurus)
'for one female model returning inside' is the wordplay.
'for one' becomes 'say' (both can mean 'for example').
'female' becomes 'f' (abbreviation).
'model' becomes 'sit' ('sit' can be a synonym of 'model'**).
'returning' is a reversal indicator.
'inside' indicates putting letters inside.
'f'+'sit'='fsit'
'fsit' reversed gives 'tisf'.
'say' placed around 'tisf' is 'SATISFY'.
(Other definitions for satisfy that I've seen before include "pay in full" , "Provide enough" , "Fulfil, gratify" , "Meet, comply with" , "Quench, sate" .)