Please speak about female model making a comeback (7)
I believe the answer is:
satisfy
'please' is the definition.
(to satisfy someone is to please them)
'speak about female model making a comeback' is the wordplay.
'speak' becomes 'say' (I've seen this in another clue).
'about' indicates putting letters inside.
'female' becomes 'f' (common abbreviation).
'model' becomes 'sit' (e.g. for a painting).
'making a comeback' is a reversal indicator.
'f'+'sit'='fsit'
'fsit' backwards is 'tisf'.
'say' enclosing 'tisf' is 'SATISFY'.
(Other definitions for satisfy that I've seen before include "Fulfil, gratify" , "Meet (a requirement)" , "Fully meet (conditions)" , "Please; comply with" , "Provide enough" .)