State you need a bit of a back massage (5)
I believe the answer is:
assam
'state' is the definition.
(I know that Assam is a state)
'a bit of a back massage' is the wordplay.
'ASSAM' is hidden back-to-front within the letters.
But, I am not sure how this is indicated.
'you need' acts as a link.
Can you help me to learn more?
(Other definitions for assam that I've seen before include "Indian tea-growing area" , "I'll provide lots of tea" , "Indian tea region" , "source of tea?" , "Top quality tea" .)