See a change as no difficulty (4)
I believe the answer is:
ease
'no difficulty' is the definition.
(I've seen this in another clue)
'see a change' is the wordplay.
'change' indicates anagramming the letters.
'see'+'a'='seea'
'seea' anagrammed gives 'EASE'.
'as' is the link.
(Other definitions for ease that I've seen before include "No trouble" , "nonchalance!" , "Calm" , "Lack of difficulty" , "Comfort or freedom from difficulty" .)