Teller managed to inform again (6)
I believe the answer is:
retell
'inform again' is the definition.
('tell' is an answer for 'inform' so perhaps 'retell' is OK for 'inform again')
'teller managed' is the wordplay.
'managed' is an anagram indicator.
'teller' is an anagram of 'RETELL'.
'to' is the link.
(Other definitions for retell that I've seen before include "Once again inform" , "Narrate again" , "Repeat" , "Once more recount story" .)