Condescends to change the design (6)
I believe the answer is:
deigns
'condescends' is the definition.
(to deign to do something is to condescend to it)
'change the design' is the wordplay.
'change' indicates anagramming the letters.
'design' is an anagram of 'DEIGNS'.
'to' is the link.
(Other definitions for deigns that I've seen before include "Stoops, condescends" , "Condescends, is loftily gracious" , "Does something beneath one's dignity" , "Is condescending by design (6)" , "Condescends by design" .)