One of two writers using revolutionary material (5)
I believe the answer is:
eliot
'one of two writers' is the definition.
(George Eliot or TS Eliot)
'revolutionary material' is the wordplay.
'revolutionary' says the letters should be written in reverse (letters revolve around).
'material' becomes 'toile' (type of fabric).
'toile' written backwards gives 'ELIOT'.
'using' acts as a link.
(Other definitions for eliot that I've seen before include "T.S. --, poet" , "Middlemarch author" , "One of two writers" , "T S . . . . ., great poet of 'The Waste Land'" , "Murder in the Cathedral author" .)