Bring mule that's clumsy and awkward (9)
I believe the answer is:
lumbering
'awkward' is the definition.
(to lumber is to move awkwardly)
'bring mule that's clumsy' is the wordplay.
'that's clumsy' indicates anagramming the letters.
'bring'+'mule'='bringmule'
'bringmule' anagrammed gives 'LUMBERING'.
'and' is the link.
(Other definitions for lumbering that I've seen before include "Ponderous" , "Awkward" , "Moving in heavy clumsy way" .)