Yours truly in the grip of uncontrollable greed, as became apparent (7)
I believe the answer is:
emerged
'became apparent' is the definition.
(I've seen this before)
'yours truly in the grip of uncontrollable greed' is the wordplay.
'yours truly' becomes 'me'.
'in the grip of' means one lot of letters goes inside another.
'uncontrollable' indicates anagramming the letters (I've seen this in other clues).
'greed' anagrammed gives 'erged'.
'me' put within 'erged' is 'EMERGED'.
'as' is the link.
(Other definitions for emerged that I've seen before include "Transpired" , "Came out, became known" , "Deem Reg to have come out" , "Came forth" , "Slowly came out" .)