He backed “Cold Fury” (4)
I believe the answer is:
eric
'he' is the definition.
(I've seen this before)
'backed cold fury' is the wordplay.
'backed' says the letters should be written backwards.
'cold' becomes 'c' (eg on taps).
'fury' becomes 'ire' (I've seen this before).
'c'+'ire'='cire'
'cire' in reverse letter order is 'ERIC'.
(Other definitions for eric that I've seen before include "Man" , "- Morecambe, comic" , "---- Cantona, Manchester Utd favourite of the 1990s" , "One of pair once popular" , "-- Sykes; -- Idle" .)