Bizarre legend about Philby, for one (6,5)

I believe the answer is:

double agent

'philby for one' is the definition.
(Kim Philby is an example)

'bizarre legend about' is the wordplay.
'bizarre' indicates an anagram.
'legend'+'about'='legendabout'
'legendabout' is an anagram of 'DOUBLE AGENT'.

(Other definitions for double agent that I've seen before include "Treacherous spy" , "AA man?" .)

I've seen this clue in The Guardian.

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