He’s daft … I’m oddly clumsy (3-6)
I believe the answer is:
ham-fisted
'clumsy' is the definition.
(I've seen this before)
'he's daft i'm oddly' is the wordplay.
'oddly' indicates an anagram (letters in an odd order).
'hes'+'daft'+'im'='hesdaftim'
'hesdaftim' with letters rearranged gives 'HAM-FISTED'.
(Other definitions for ham-fisted that I've seen before include "I'm shafted, being clumsy" , "Clumsy, awkward" , "Lacking 5 across" .)