Complains about his new order (6)
I believe the answer is:
whines
'complains' is the definition.
(whining is a kind of complaining)
'his new order' is the wordplay.
'order' indicates anagramming the letters.
'his'+'new'='hisnew'
'hisnew' is an anagram of 'WHINES'.
'about' is the link.
(Other definitions for whines that I've seen before include "Makes high complaining sound like dog" , "Complains in petty or feeble way" , "Complains or snivels in newish way" , "bellyaches" , "Complains in petty way - like dog?" .)