German leader’s opportunity, getting backing of list of names (10)
I believe the answer is:
chancellor
'german leader's' is the definition.
(term for the head of the German government)
'opportunity getting backing of list of names' is the wordplay.
'opportunity' becomes 'chance' (synonyms).
'getting' is a charade indicator (letters next to each other).
'backing of' says the letters should be written backwards.
'list of names' becomes 'roll' (as in a roll of honour).
'roll' reversed gives 'llor'.
'chance'+'llor'='CHANCELLOR'
(Other definitions for chancellor that I've seen before include "Head of government" , "Govt. finance minister" , "Government leader" , "11 17 down [CABINET MINISTER]" , "Titular university head" .)