About to get a couple to mend (6)
I believe the answer is:
repair
'to mend' is the definition.
(synonyms)
'about to get a couple' is the wordplay.
'about to get' becomes 're' (I've seen this in other clues).
'a couple' becomes 'pair' (synonyms).
're'+'pair'='REPAIR'
(Other definitions for repair that I've seen before include "Restore to working condition" , "resort" , "Maintain" , "Mend, restore to good condition" , "service" .)