Require massage, say (4)
I believe the answer is:
need
'require' is the definition.
(I know that require can be written as need)
'massage say' is the wordplay.
'massage' becomes 'knead' (synonyms).
'say' indicates a 'sounds like' (homophone) clue.
'knead' is a homophone of 'NEED'.
(Other definitions for need that I've seen before include "'miss'" , "state requiring relief" , "Rely on" , "state of distress" , "Shortage" .)