Playwright stooped to collect bag (7)
I believe the answer is:
bennett
'playwright' is the definition.
(I've seen this before)
'stooped to collect bag' is the wordplay.
'stooped' becomes 'bent' (I've seen this in another clue).
'to collect' is an insertion indicator (inserted letters are collected by others).
'bag' becomes 'net' (I've seen this in other clues).
'bent' placed around 'net' is 'BENNETT'.
(Other definitions for bennett that I've seen before include "Alan or Arnold, writers" , "Arnold --, Eng. author" , "Alan --, playwright" , "Arnold -, English author (Anna of the Five Towns)" .)