Hunks unfortunately score, letting in own goal (7)
I believe the answer is:
scrooge
'hunks unfortunately score letting in own goal' is the definition.
I can't judge whether this definition defines the answer.
'unfortunately score letting in own goal' is the wordplay.
'unfortunately' indicates anagramming the letters.
'letting in' is an insertion indicator.
'own goal' becomes 'og' (football abbreviation).
'score' anagrammed gives 'scroe'.
'scroe' enclosing 'og' is 'SCROOGE'.
Can you help me to learn more?
(Other definitions for scrooge that I've seen before include "Ebenezer ......., miser created by Dickens" , "Dickens' skinflint (7)" , "Dickensian character" , "meanie" , "Ebenezer ....., famous miser" .)