Escort loves to accept pounds after performance (6)
I believe the answer is:
gigolo
'escort' is the definition.
(term for a male escort)
'loves to accept pounds after performance' is the wordplay.
'loves' becomes 'oo' (love means 0 in tennis).
'to accept' means one lot of letters goes inside another.
'pounds' becomes 'l' (abbreviation e.g. Lsd - pounds, shillings, pence).
'after' is a charade indicator (letters next to each other).
'performance' becomes 'gig' (a gig is a musical concert).
'oo' placed around 'l' is 'olo'.
'olo' after 'gig' is 'GIGOLO'.
(Other definitions for gigolo that I've seen before include "Paid male lover" , "Old word for man maintained by rich woman" , "Man supported by an older woman to be her lover" , "Male lover for hire" , "Man living off an older woman" .)