You said a politician has anger with the referee (6)
I believe the answer is:
umpire
'the referee' is the definition.
(I've seen this before)
'you said a politician has anger' is the wordplay.
'said' shows a homophone (sound like).
'a politician' becomes 'MP' (Member of Parliament).
'has' is a charade indicator (letters next to each other).
'anger' becomes 'ire' (ire is intense rage).
'you' sounds like 'u'.
'u'+'mp'+'ire'='UMPIRE'
'with' acts as a link.
(Other definitions for umpire that I've seen before include "A field judge in circket" , "Sports arbiter" , "Adjudicator in games such as cricket, tennis etc" , "Game judge" , "Impartial supervisor" .)